Mitsubishi FX3G SERIES User Manual page 367

FX Series Programmable Controllers
3G
User's Manual - Hardware Edition
Number and
Content of register
name
RS2 (FNC 87) [ch2] and Computer Link [ch2]
RS2 (FNC 87) [ch2]
D 8420
Communication format setting
Computer link [ch2]
D 8421
Station number setting
RS2 (FNC 87) [ch2]
*1
[D]8422
Remaining points of transmit data
RS2 (FNC 87) [ch2]
*1
[D]8423
Monitoring receive data points
[D]8424 Not used
Communication parameter display
[D]8425
[ch2]
[D]8426 Not used
Computer link [ch2]
D 8427 Specification of on-demand head
device register
Computer link [ch2]
D 8428 Specification of on-demand data
length register
RS2 (FNC 87) [ch2], computer link
D 8429 [ch2]
Time-out time setting
RS2 (FNC 87) [ch2]
D 8430
Header 1 and 2 <Default: STX>
RS2 (FNC 87) [ch2]
D 8431
Header 3 and 4
RS2 (FNC 87) [ch2]
D 8432
Terminator 1 and 2 <Default: ETX>
RS2 (FNC 87) [ch2]
D 8433
Terminator 3 and 4
RS2 (FNC 87) [ch2]
[D]8434
Receive sum (received data)
RS2 (FNC 87) [ch2]
[D]8435
Receive sum (calculated result)
[D]8436 RS2 (FNC 87) [ch2] Send sum
[D]8437 Not used
*1. Cleared when PLC switches from RUN to STOP.
Appendix A-2 Special Data Register (D8000 to D8511)
Correspond-
Number and
ing special
name
device
Error Detection
*2
-
[D]8438
RS2 (FNC 87) [ch2] and Computer Link [ch2]
-
[D]8439
Error Detection
M8422
[D]8440 to [D]8448 Not used
M8423
[D]8449
[D]8450 to [D]8459 Not used
-
Positioning
-
[D]8460 to [D]8463 Not used
-
D 8464
M8426 to
D 8465
M8429
D 8466
-
D 8467 to [D]8511
-
*2. Cleared when PLC power supply from OFF to ON.
-
-
-
-
-
-
Appendix A: Special Device List
Content of register
Error code for serial communication
error 2 [ch2]
Operation mode display [ch2]
Special block error code
DSZR (FNC150) and ZRN
(FNC156) instructions:
[Y000] Clear signal device
specification
DSZR (FNC150) and ZRN
(FNC156) instructions:
[Y001] Clear signal device
specification
DSZR (FNC150) and ZRN
(FNC156) instructions:
[Y002] Clear signal device
specification
Not used
21
Correspond-
ing special
device
22
M8438
-
-
M8449
A
-
-
M8464
B
M8465
M8466
-
361