Mitsubishi Electric MELSEC-Q Structured Programming Manual page 154

FXCPU Structured Programming Manual
[Device & Common]
Number and name
RS2 instruction [ch1] (Refer to the data communication manual for details.)
[M]8400 Unavailable
*1
RS2[ch1] Send wait flag
[M]8401
*1
RS2[ch1] Send request
M 8402
*1
RS2[ch1] Receive complete flag
M 8403
[M]8404 RS2[ch1] Carrier detection flag
[M]8405 RS2[ch1] Data set ready (DSR) flag
[M]8406
[M]8407 Unavailable
[M]8408
M 8409 RS2[ch1] Timeout check flag
*1. They are cleared when the PLC mode switches from RUN to STOP or when the RS2 instruction [ch1]
is set to OFF.
*2. Available in Ver. 2.30 or later.
RS2 instruction [ch2] and computer link [ch2] (Refer to the data communication manual for details.)
[M]8410 to [M]8420 Unavailable
*3
RS2[ch2] Send wait flag
[M]8421
*3
RS2[ch2] Send request
M 8422
*3
RS2[ch2] Receive complete flag
M 8423
[M]8424 RS2[ch2] Carrier detection flag
[M]8425 RS2[ch2] Data set ready (DSR) flag
[M]8426 Computer link [ch2]: Global signal ON
[M]8427 Computer link [ch2]: On-demand send being executed
M 8428 Computer link [ch2]: On-demand error flag
Computer link [ch2]: On-demand word/byte changeover
M 8429
RS2 (FNC87) instruction [ch2]: Timeout check flag
*3. They are cleared when the PLC mode switches from RUN to STOP or when the RS2 instruction [ch2]
is set to OFF.
*4. Available in Ver. 2.30 or later.
Number and name
MODBUS serial communication [ch1] (Refer to MODBUS serial communication Manual for details.)
[M]8401 MODBUS Request in Process
[M]8402 MODBUS Communication Error
[M]8403 MODBUS Communication Error (latched)
[M]8404 Listen Only Mode
[M]8405 to [M]8407 Unavailable
[M]8408 Retry
[M]8409 Timeout
[M]8410 Unavailable
MODBUS serial communication [ch2] (Refer to MODBUS serial communication Manual for details.)
[M]8421 MODBUS Request in Process
[M]8422 MODBUS Communication Error
[M]8423 MODBUS Communication Error (latched)
[M]8424 Listen Only Mode
[M]8425 to [M]8427 Unavailable
[M]8428 Retry
[M]8429 Timeout
[M]8430 Unavailable
MODBUS serial communication [ch1, ch2] (Refer to MODBUS serial communication Manual for details.)
M 8411 MODBUS Configuration Request Flag
*5. Available in Ver. 2.40 or later.
*6. Available in Ver. 1.30 or later.
152
4 Operations of Special Devices (M8000 and later, D8000 and later)
Operation and function
Operation and function
4.1 Special Device List (M8000 and later, D8000 and later)
Applicable model
FX FX FX FX
3U 3UC 3G
- - -
*2 *2
- - -
- - -
- - -
- - -
*4 *4
Applicable model
FX FX FX FX
3U 3UC 3G
*5 *5 *6
*5 *5 *6
*5 *5 *6
*5 *5
-
- - -
*5 *5 *6
*5 *5 *6
- - -
*5 *5 *6
*5 *5 *6
*5 *5 *6
*5 *5
-
- - -
*5 *5 *6
*5 *5 *6
- - -
*5 *5 *6
Corresponding
FX
3GC 3S
special device
- - -
-
D8402
D8403
-
-
- - -
- - -
- - -
-
- - -
- -
- D8422
- D8423
- -
- -
-
-
D8427
D8428
-
D8429
-
Corresponding
FX
3GC 3S
special device
-
D8402
D8403
- - -
- - -
-
-
- - -
- -
- D8422
- D8423
- - -
- - -
- -
- -
- - -
-