Mitsubishi Electronics FX3G User Manual
474
FX
3S
/FX
3G
/FX
3GC
/FX
3U
/FX
3UC
Series
Programming Manual - Basic & Applied Instruction Edition
16 External FX Device – FNC 80 to FNC 89
16.8 FNC 87 – RS2 / Serial Communication 2
Related devices
→ For detailed explanation, refer to the Data Communication Edition.
*1.
Ch0 is available only in FX
3G
/FX
3GC
PLCs.
Ch2 is not available in FX
3G
PLC (14-point and 24-point type) and FX
3S
PLC.
*2.
Cleared when the PLC mode is changed from RUN to STOP.
*3.
Available in all FX
3G
/FX
3GC
PLCs and FX
3U
/FX
3UC
PLCs Ver. 2.30 or later.
*4.
Cleared when PLC power supply is turned from OFF to ON.
System configuration
For using this instruction, it is necessary to attach one of the products shown in the table below to the main unit.
→ For the system configuration, refer to the respective PLC Hardware Edition manual.
→ For detailed explanation, refer to the Data Communication Edition manual.
*5.
Required to use ch0 (standard built-in RS-422 port) in FX
3G
/FX
3GC
PLCs.
Device
Name
Device
Name
ch0
*1
ch1
ch2
*1
ch0
*1
ch1
ch2
*1
M8371 M8401 M8421 Sending wait flag
*2
D8370
D8400 D8420 Communication format setting
M8372 M8402 M8422 Sending request
*2
–
−
−
−
M8373 M8403 M8423 Receiving complete flag
*2
D8372
D8402 D8422 Remaining number of data to be sent
*2
–
M8404 M8424 Carrier detection flag
D8373
D8403 D8423 Monitor for number of received data
*2
–
M8405 M8425 Data Set Ready (DSR) Flag
*3
–
D8405 D8425 Communication parameter display
–
–
–
–
D8379
D8409 D8429 Time-out time setting
M8379 M8409 M8429 Time-out check flag
D8380
D8410 D8430 Header 1, 2
–
−
−
−
D8381
D8411 D8431 Header 3, 4
D8382
D8412 D8432 Terminator 1, 2
D8383
D8413 D8433 Terminator 3, 4
D8384
D8414 D8434 Receiving sum (received data)
D8385
D8415 D8435 Receiving sum (calculation result)
D8386
D8416 D8436 Sending sum
D8389
D8419 D8439 Operation mode display
M8062 M8063 M8438 Serial communication error
*4
D8062
D8063 D8438 Serial communication error code
*4
PLC
Communication type
Option
FX
3S
RS-232C communication
FX
3G
-232-BD or FX
3U
-232ADP(-MB) (with FX
3S
-CNV-ADP)
RS-485 communication
FX
3G
-485-BD(-RJ) or FX
3U
-485ADP(-MB) (with FX
3S
-CNV-ADP)
FX
3G
RS-232C communication
FX
3G
-232BD or FX
3U
-232ADP(-MB) (which requires FX
3G
-CNV-ADP)
RS-232C/RS-422 converter
*5
(FX-232AW, FX232AWC and FX-232AWC-H)
RS-485 communication
FX
3G
-485-BD(-RJ) or FX
3U
-485ADP(-MB) (which requires FX
3G
-CNV-ADP)
FX
3GC
RS-232C communication
FX
3U
-232ADP(-MB)
RS-232C/RS-422 converter
*5
(FX-232AW, FX232AWC and FX-232AWC-H)
RS-485 communication
FX
3U
-485ADP(-MB)
FX
3U
,
FX
3UC
-32MT-LT(-2)
RS-232C communication
FX
3U
-232-BD or FX
3U
-232ADP(-MB)
RS-485 communication
FX
3U
-485-BD or FX
3U
-485ADP(-MB)
FX
3UC
(D,DS,DSS)
RS-232C communication
FX
3U
-232ADP(-MB)
RS-485 communication
FX
3U
-485ADP(-MB)