Mitsubishi Electronics FX 485ADP User Manual

FX-485ADP COMMUNICATION ADAPTER  
FX0N-485ADPCOMMUNICATION ADAPTER  
USER'S GUIDE  
JY992D53201C  
This manual contains text, diagrams and explanations which will guide the reader in the correct installation and  
operation of the FX and FX0N, 485 communication adapters. It should be read and understood before attempt-  
ing to install or use these units.  
Further information can be found in the FX PROGRAMMING MANUAL, FX and FX0/FX0N series hardware  
manuals.  
When the FX0N-485ADP is used with the FX2N series programmable contoller, please see the FX2N-485-BD  
USER'SGUIDEforoperation.  
INTRODUCTION  
1
The adapter for FX-485ADP RS485 or the adapter for FX0N-485ADP RS485 (both called 485ADP hereinafter)  
is designed to link the data between PC and computer by using 485PC-IF.  
(1)Data exchange by request from computer  
Specified data can be exchanged by sending a request command from the computer to the PC. Except for  
few functions (global function, on-demand function), the program for data link is not needed at the PC side.  
Batch read / write of all devices (word unit, bit unit) of PC is possible. By reading out the content of each  
device of the PC, the operating state can be monitored, or the data can be acquired and analyzed. Besides,  
by writing data into each device, production control and production direction can be effected.  
Remote run / stop of PC is possible. A stopped PC can be started and stopped again from the computer,  
and therefore the PCs are remote controlled.  
A batch instruction can be issued to all PCs. When one computer and plural PCs are connected, a specific  
device (special auxiliary relay M8126) can be turned on or off from the computer to all PCs on the circuit.  
This function is called the global function. This special auxiliary relay M8126 is an exclusive device for  
global function.  
(2)Data exchange by request from PC  
If transmission of emergency data from the PC to the computer is necessary, the PC issues a send request  
to interrupt in the computer. This function is called on-demand function, and is enabled only when the  
system is composed of one computer and one PC.  
1.1 External dimensions  
FX-485ADP⟩  
Weight : Approx. 0.3 kg (0.66 lbs) Units : mm (inches)  
2- φ5.5 (0.22)  
Mounting hole  
MITSUBISHI  
Direct mounting hole  
Power LED ··· lighting while power is correctly  
supplied.  
RD LED ······· lighting while receiving data.  
SD LED ······· lighting while sending data.  
Terminal screws (M3 (0.12))  
Extension cable  
Terminal cover  
Groove for mounting DIN rail (DIN rail width :  
35 (1.38))  
FX-485ADP  
Hook for mounting DIN rail  
Topcover  
10 (0.39)  
25 (0.98)  
45 (1.77)  
FX0N-485ADP⟩  
Weight : Approx. 0.3 kg (0.66 lbs) Units : mm (inches)  
2- φ 4.5 (0.18)  
485ADP  
9 (0.35)  
87 (3.43)  
4 (0.16)  
43 (1.69)  
1.2 System configuration  
The system configuration of computer and PC is either 1 : 1 or 1 : n, and for communication with the computer,  
the RS-485 or RS-422 is used.  
(1) Computer and PC by 1 : 1 configuration  
: RS-232C interface  
FX,FX2C  
: RS-485 interface  
series PC  
: RS-232C cable  
: RS-422 or RS-485 cable  
Computer  
485PC-IF  
485ADP Station No.0  
Max. 500m  
(2) Computer and PC by 1 : n configuration  
In this case, the number of link stations is 16 PCs at maximum for one computer, including the FX series  
PCs and A series PCs. Such system of data exchange with plural PCs with one computer is called the  
multi-drop link system.  
Computer  
A
FX  
FX  
FX  
series  
PC  
series PC  
series PC  
series PC  
485PC-IF  
485ADP Station  
No.0  
485ADP Station  
No.1  
485ADP Station  
No.2  
Station  
No.15  
Computer  
link unit  
Max. 16 stations including A series PCs (total extension distance 500m)  
: RS-232C interface  
: RS-485 interface  
: RS-232C cable  
: RS-422 or RS-485 cable  
1.3 Applicable PCs  
For setting up the system, the 485ADP can be connected to the following PCs.  
PC series  
FX0N-485ADP FX0N  
FX-485ADP  
FX , FX2C  
PC version  
Ver. 1.20 or later  
Ver. 3.30 or later  
Remarks  
Exclusive protocol format 1 and format 4 are supported.  
Exclusive protocol format 1 and format 4 are supported.  
As for exclusive protocol formats (1, 4) , see the 485PC-IF manual.  
1.4 Connection with PC  
For connection with the PC, connect the serial port provided at the left side facing the PC basic unit and the  
extension cable of the 485ADP. It must be noted however that only one special adapter (FX-8AV, FX-232ADP,  
etc.) such as 485ADP can be connected to the PC.  
In the case of FX0N-485ADP  
In the case of FX-485ADP  
M
I
T
S
U
B
I
S
H
I
F
X
-
4
8
5
A
D P  
WIRING  
2
The connecting method with the 485PC-IF is available in two-pair wiring and one-pair wiring, which may be  
used as follows. As for connection of the 485PC-IF and computer, see the 485PC-IF manual.  
Two-pair wiring is required when :  
The RS-422 device is incorporated in the system configuration.  
*
A high speed response is required (message waiting time is desired to be less than 70 ms).  
The on-demand function is used (however, the system configuration must be 1 : 1).  
Adding to a system already using two-pair wiring.  
*See the 485PC-IF manual.  
One-pair wiring is required when :  
Adding to a system already using one-pair wiring.  
The system configuration is standardized to RS-485 devices, and two-pair wiring is not needed.  
2.1 Examples of two-pair wiring (for RS-422 circuit)  
(1) When connecting one computer and one PC  
485PC-IF  
485PC  
Cable connection and signal direction  
Signal name  
Application  
Signal name  
SDA  
RDA Reception data  
RDB Reception data  
SDA Transmission data  
SDB Transmission data  
R*1  
R*1  
SDB  
RDA  
R*1  
R1  
RDB  
LINK SG  
LINK SG  
Signal ground  
FG *2  
Frame ground  
Grounding  
resistance of  
100 or less  
24V *3  
24G *3  
Power supply terminal  
Power supply terminal  
DC24V  
FX base unit  
(2) Computer and PCs in 1 : n connection ( n has a maximum value of 16 ).  
The terminal lagout shown is diagrammatic only. As for 485ADP, see chapter 1, and as for 485PC-IF,  
and computer link unit for A series PC, see the individual manuals.  
Computer link unit  
of A series PCs  
Computer  
485PC-IF  
485ADP  
485ADP  
Station  
No. 0  
SDA  
Station  
No. 1  
SDA  
Station  
No. 15  
SDA  
R *1  
SDA  
*1  
R
SDB  
SD  
SDB  
RDA  
RDB  
SDB  
RDA  
RDB  
SDB  
RDA  
RDB  
SG  
SD  
RD  
R *1  
RDA  
*1  
R
RDB  
RD  
LINK  
SG  
LINK  
SG  
*2  
LINK  
SG  
*2  
*2  
FG  
FG  
FG  
*1 R is the terminating resistance. Connect the terminating resistance (330 ) between terminals  
SDA and SDB , and terminals RDA and RDB . For details see section 2.3.  
*2 Connect terminal FG to earth terminal  
of the PC main body grounded with resistance of 100  
or less. However, as for the computer link unit of the A series PC, see the manual of the computer  
link unit.  
*3 The 24V DC power requirement can be taker from the service power supply of the PC.  
2.2 Examples of one-pair wiring (for RS-485 circuit)  
(1) When connecting one computer and one PC  
485PC-IF  
485ADP  
Signal name  
RDA  
Cable connection and signal direction  
Signal name  
Application  
SDA  
SDB  
Reception data  
R*1  
RDB  
Reception data  
SDA  
SDB  
LINK SG  
FG *2  
Transmission data  
Transmission data  
Signal ground  
RDA  
R*1  
RDB  
LINK SG  
Frame ground  
Grounding  
resistance of  
100 or less  
24V *3  
Power supply terminal  
Power supply terminal  
DC24V  
24G*3  
FX base unit  
(2) Computer and PCs in 1 : n connection ( n has a maximum value of 16 ).  
The terminal lagout shown is diagrammatic only. As for 485ADP, see chapter 1, and as for 485PC-IF, and  
computer link unit for A series PC, see the individual manuals.  
Computer  
485PC-IF  
485ADP  
485ADP  
485ADP  
Station  
No. 0  
SDA  
Station  
No. 1  
SDA  
Station  
No. 15  
SDA  
SDA  
SDB  
SD  
SDB  
RDA  
RDB  
SDB  
RDA  
RDB  
SDB  
RDA  
RDB  
SD  
RD  
*
1
R
RDA  
*1  
R
RDB  
RD  
LINK  
SG  
LINK  
SG  
*2  
LINK  
SG  
*2  
LINK  
SG  
*2  
FG  
FG  
FG  
*1 R is the terminating resistance. Connect the terminating resistance (110 ) between terminals  
RDA and RDB . For details see section 2.3.  
*2 Connect terminal FG to earth terminal  
of the PC main body grounded with resistance of 100  
or less. However, as for the computer link unit of the A series PC, see the manual of the computer  
link unit.  
*3 The 24V DC power requirement can be taker from the service power supply of the PC.  
2.3 Terminating resistances  
TheterminatingresistancesareresistancesconnectedbetweenterminalsSDAandSDB, andbetweenterminals  
RDA and RDB at both end stations of the circuit (or the interface when an interface such as 485PC-IF is used  
at both end stations), when connecting with the RS-485 or RS-422 circuit. For connection examples, see  
section 2.1 and 2.2.  
Classification of terminating resistances  
In this product, two sets of terminal end resistances (330 2, 110 1) are packaged, and the terminating  
resistances to be connected differ as shown below depending on the circuit being used.  
When communicating with the RS-422 circuit, connect the resistances of “330 1/4W ” as the terminating  
resistances.  
WhencommunicatingwiththeRS-485circuit, connecttheresistancesof “110 1/2Wastheterminating  
resistances.  
330 Ω⟩  
110 Ω⟩  
Orange Brown  
Brown Orange  
Two-pair wiring  
One-pair wiring  
SDA  
SDB  
RDA  
RDB  
SDA  
Terminating resistance  
(330 )  
Terminating resistance  
(330 )  
SDB  
RDA  
RDB  
Terminating resistance  
(110 )  
2.4 Cautions for wiring  
As one of the conditions for exhibiting the function of the 485ADP sufficiently and building up a reliable system,  
external wiring resistant to noise is essential. Cautions for external wiring are given below.  
(1) In this system, the data is read or written (turned on or off by force) while the PC is operating. Accordingly,  
if abnormal data is written into the PC due to effect of noise, the PC may malfunction, leading to machine  
trouble or accident, and therefore the following cautions should be strictly observed.  
Never lay near or bundle together with the main circuit, high voltage line or load line. Or effects of noise or  
surge induction may be serious. Keep at least a safe distance of over 100 mm from these lines.  
Ground the shield wire or shield of shield cable at one point at the PC side. Never ground commonly with  
high voltage line.  
(2) Terminals screws of terminal block for RS-485 are M3 threaded. Therefore, connect wiring by fitting a  
crimped terminal suited to the terminal screws (see below) to the cable.  
M3  
threads  
M3  
threads  
6.2 mm  
(0.24 inches)  
or less  
6.2 mm  
(0.24 inches)  
or less  
(3) Tightening torque of terminals is 0.5 to 0.8 N·m (5 to 8 kgf·cm). Screw terminals must be secure enough to  
prevent a loose connection from causing a malfunction.  
SPECIFICATIONS  
3
Environmental specifications  
Operating ambient temperature  
Humidity no condensation  
0 to 55°C, storage temperature -20 to 70°C  
35 to 85% RH (No condensation)  
Conforming to JIS C 0911. 10 to 55 Hz, 0.5 mm (max. 2G), 2 hr each in 3 axes; however, 0.5G  
when mounting DIN rail.  
Vibration resistance  
Shock resistance  
Noise immunity  
Conforming to JIS C 0912. 10G, 3 times each in 3 axes  
Noise voltage 1000V p-p, noise width 1µsec, period 30 to 100 Hz, by noise simulator.  
Dielectric withstand voltage  
Insulation resistance  
Ground  
500V AC, 1 min  
Between all terminals in batch and FG terminal  
500V DC, 5 M by Megger  
Grounding resistance of 100 or less (class 3)  
Operating ambience  
Free from corrosive gases, minimal dust.  
Power source specification and type of isolation  
Supply voltage  
5V DC (supplied from PC), 24V DC ±10%  
External power supply : 24V DC, max. 50 mA  
Internal power supply from PC : 5V DC, max. 30 mA  
Power source is isolated by transformer ; PC and communication signal lines are isolated by  
photo coupler .  
Current consumption  
Type of isolation  
Performance specification  
Transmission specification * For detail of Special D8120, D8121, and D8129, see the 485PC-IF manual.  
Item  
Specifications  
Interface  
Conforming to RS-422 / 485.  
Communication method  
Synchronization method  
Transfer speed (bps)  
Start bit  
Exclusive protocol, half-duplex communication system  
Start-stop synchronous system  
300,600,1200,2400,4800,9600,19200  
1
Data bit  
Vertical parity bit  
Stop bit  
7 or 8  
1 or none  
1 or 2  
The communication format of the PC is set using  
Data format  
*
special D8120.  
Error  
detection  
Parity check  
Sum check  
Odd / even / none  
Yes / no  
Transfer control procedure  
Protocol format 1 or format 4  
One request is processed at the time of END processing of sequence program. Therefore,  
access cycle is one scan time.  
Access cycle  
Circuit configuration (computer : PC) 1 : 1 or 1 : n (n = 0 to 15, max. 16 stations)  
ransfer  
distance  
RS-485, RS-422  
RS-232C  
Total extension within 500 m  
Within 15 m  
Station numbers  
0 to 15 (set by Special D8121 )  
Time-out judging time FX0N  
(Special D8129 FX, FX2C  
1 to 255 (10 to 2,550 ms) ; however, setting of “0” hrenders 100 ms.  
1 to 3,276 (10 to 32,760 ms) ; however, setting of “0” hrenders 100 ms.  
)
COMMAND AND DEVICE RANGE  
4
4.1 Computer commands  
Number of processing points  
done by one communication  
Objective  
device symbol  
Command  
Function  
Symbol ASCII code  
FX0N  
FX, FX2C  
To read out on/off state of bit device in batch in the unit of 1  
point.  
To read out on/off state of bit device in batch in the unit of  
16 points.  
To read out numerical data stored in word device in batch in  
the unit of 1 point.  
To write on/off state into bit device in batch in the unit of 1  
point.  
To write on/off state into bit device in batch in the unit of 16  
points.  
To write numerical data into word device in batch in the unit  
of 1 bit.  
To specify bit device at random in the unit of 1 point, and  
set/reset by force.  
BR  
WR  
BW  
42H,52H  
57H,52H  
42H,57H  
X,Y,M,S,T,C  
X,Y,M,S  
54 points  
256 points  
13 words,  
208 points  
32 words,  
512 points  
T,C,D  
13 points  
64 points  
X,Y,M,S,T,C  
X,Y,M,S  
46 points  
160 points  
10 words,  
160 points  
10 words,  
160 points  
WW 57H,57H  
T,C,D  
11 points  
10 points  
64 points  
20 points  
BT  
42H,54H  
X,Y,M,S,T,C  
To specify bit device at random in the unit of 16 points, and  
set/reset by force.  
To specify word device at random in the unit of 1 point, and  
write data by force.  
6 words,  
96 points  
10 words,  
160 points  
X,Y,M,S  
WT  
42H,54H  
*
T,C , D  
6 points  
10 points  
RR  
RS  
PC  
52H,52H To remote-run the PC.  
52H,53H To remote-stop the PC.  
52H,43H To read out the type name of PC.  
Special  
auxiliary  
relay M8126  
To turn on/off global signal (special auxiliary relay M8126 in  
47H,57H  
GW  
TT  
1 points  
1 points  
FX series) to all PCs connected to computer link.  
To transmit the data received from computer directly back  
54H,54H  
25 characters 254 characters  
to the computer.  
* Counter except for high speed counter, 32-bit counter (C200 to C255).  
4.2 PC commands  
The command to be effected from the PC is the on-demand command only. This command can be used only  
when the system configuration is 1:1. In this on-demand command, the content of the data register specified at  
the PC side is transmitted to the computer side from the PC side. The maximum number of points of the data  
register that can be transmitted as follows.  
PC series  
FX0N  
Max. number of points  
13 words  
FX , FX2C  
64 words  
4.3 Device range  
Device number range (characters)  
Decimal/Octal  
expression  
Device  
FX0N series PC  
FX , FX2C series PC  
X0000 ~ X0337  
Y0000 ~ Y0337  
M0000 ~ M1535  
S0000 ~ S0999  
M8000 ~ M8255  
TS000 ~ TS255  
( )  
Input relay  
X
X0000 ~ X0177  
Y0000 ~ Y0177  
M0000 ~ M0511  
S0000 ~ S0127  
M0000 ~ M8254  
TS000 ~ TS063  
CS000 ~ CS031  
CS235 ~ CS254  
TN000 ~ TN063  
CN000 ~ CN031  
CN235 ~ CN254  
D0000 ~ D0255  
D1000 ~ D2499  
Octal  
( )  
Output relay  
Auxiliary relay  
State  
Special auxiliary relay  
Timer contact  
Y
( )  
M
( )  
S
( )  
M
( )  
T
Counter contact  
(C)  
CS000 ~ CS255  
TN000 ~ TN255  
CN000 ~ CN255  
( )  
T
Timer present value  
Counter present value  
Decimal  
(C)  
( )  
Data register  
File register  
RAM file register  
Special data register  
D
D0000 ~ D0999  
D1000 ~ D1999  
D6000 ~ D7999  
D8000 ~ D8255  
( )  
D
( )  
D
( )  
D
D8000 ~ D8255  
As for timer and counter, it must be noted  
that the character symbols differ as follows  
between the bit device and word device.  
Bit device (contact)  
Word device (present value)  
Timer  
Counter  
TS  
CS  
TN  
CN  
DIAGNOSTICS  
5
In case of trouble, check the following points, and remedy according to the troubleshooting guide in the 485PC-  
IF manual.  
(1) Power LED  
Lit  
: The extension cable is normally connected to the PC.  
Otherwise : The extension cable is not connected correctly, or external 24 V DC power supply is not func-  
tioning correctly. Check and connect correctly.  
(2) As for SD LED, RD LED, check and remedy according to the troubleshooting guide in the 485PC-IF manual.  
START UP PROCEDURE  
6
Prior to start of operation, follow the procedure below. As for detail of procedure, see the 485PC-IF manual.  
······ See section 1.2.  
Determine system configuration  
(1) Setting of transfer specification  
······For each item of the communication format e. g., station number, time-  
(D8120)  
• Specification of data length  
out check time, please see the 485PC-IF manual.  
• Specification of parity  
• Specification of stop bit  
When using the FX0N series PC, be sure to turn on the special auxiliary  
relayM8120becausespecialdataregistersD8120, D8121, andD8129  
are reserved.  
• Specification of transfer speed  
(baud rate)  
• Specification of sum check  
Specification of transfer  
procedure (exclusive protocol)  
(2) Setting of station number (D8120)  
(3) Setting of time-out check time  
(D8129)  
When the special auxiliary relay M8120 is in an ON state, it must be  
noted that the backed up data registers D254, D255 become general  
data registers.  
Creation of program at computer side ······  
Create communication program on the computer by using BASIC or  
the similar programming tools.  
External wiring  
······  
See section 2.1 and 2.2.  
······See section 2.3.  
Connection of terminal end resistance  
Loop test  
······  
Execute loop test, and confirm data exchange.  
For details see the 485PC-IF manual.  
······When using on-demand function or global function, the sequence  
program for transmission and reception is required at the PC side.  
For details see the 485PC-IF manual.  
Creation of sequence program for data  
transmission and reception  
Operation  
Guidelines for the safety of the user and protection of  
the FX-485ADP, FX0N-485ADP communication adapter  
This manual has been written to be used by trained and competent personnel. This is defined by  
the European directives for machinery, low voltage and EMC.  
If in doubt at any stage during the installation of the FX-485ADP, FX0N-485ADP always consult a  
professional electical engineer who is qualified and trained to the local and national standards. If in  
doubt about the operation or use of the FX-485ADP, FX0N-485ADP please consult the nearest  
Mitsubishi Electric distributor.  
Under no circumstances will Mitsubishi Electric be liable or responsible for any consequential  
damage that may arise as a result of the installation or use of this equipment.  
All examples and diagrams shown in this manual are intended only as an aid to understanding the  
text, not to guarantee operation. Mitsubishi Electric will accept no responsibility for actual use of  
the product based on these illustrative examples.  
Manual number : JY992D53201  
Manual revision : C  
Data  
: AUGUST 1997  
HEAD OFFICE : MITSUBISHI DENKI BLDG MARUNOUCH TOKYO 100 TELEX : J24532 CABLE MELCO TOKYO  
HIMEJI WORKS : 840, CHIYODA CHO, HIMEJI, JAPAN  
Effective AUG. 1997  
Specifications are subject  
to change without notice.  
JY992D53201C  

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