Mitsubishi FX3G Series - Page 367

Appendix A: Special Device List
361
FX3G Series Programmable Controllers
User's Manual - Hardware Edition
21
Memory Cassette
22
Battery
A
Special Devices (M8000-,D8000-)
B
Instruction List
Appendix A-2 Special Data Register (D8000 to D8511)
*1. Cleared when PLC switches from RUN to STOP.
*2. Cleared when PLC power supply from OFF to ON.
Number and
name
Content of register
Correspond-
ing special
device
RS2 (FNC 87) [ch2] and Computer Link [ch2]
D 8420
RS2 (FNC 87) [ch2]
Communication format setting
-
D 8421
Computer link [ch2]
Station number setting
-
[D]8422
*1
RS2 (FNC 87) [ch2]
Remaining points of transmit data
M8422
[D]8423
*1
RS2 (FNC 87) [ch2]
Monitoring receive data points
M8423
[D]8424 Not used -
[D]8425
Communication parameter display
[ch2]
-
[D]8426 Not used -
D 8427
Computer link [ch2]
Specification of on-demand head
device register
M8426 to
M8429
D 8428
Computer link [ch2]
Specification of on-demand data
length register
D 8429
RS2 (FNC 87) [ch2], computer link
[ch2]
Time-out time setting
D 8430
RS2 (FNC 87) [ch2]
Header 1 and 2 <Default: STX>
-
D 8431
RS2 (FNC 87) [ch2]
Header 3 and 4
-
D 8432
RS2 (FNC 87) [ch2]
Terminator 1 and 2 <Default: ETX>
-
D 8433
RS2 (FNC 87) [ch2]
Terminator 3 and 4
-
[D]8434
RS2 (FNC 87) [ch2]
Receive sum (received data)
-
[D]8435
RS2 (FNC 87) [ch2]
Receive sum (calculated result)
-
[D]8436 RS2 (FNC 87) [ch2] Send sum -
[D]8437 Not used -
Number and
name
Content of register
Correspond-
ing special
device
Error Detection
[D]8438
*2
Error code for serial communication
error 2 [ch2]
M8438
RS2 (FNC 87) [ch2] and Computer Link [ch2]
[D]8439 Operation mode display [ch2] -
Error Detection
[D]8440 to [D]8448 Not used -
[D]8449 Special block error code M8449
[D]8450 to [D]8459 Not used -
Positioning
[D]8460 to [D]8463 Not used -
D 8464
DSZR (FNC150) and ZRN
(FNC156) instructions:
[Y000] Clear signal device
specification
M8464
D 8465
DSZR (FNC150) and ZRN
(FNC156) instructions:
[Y001] Clear signal device
specification
M8465
D 8466
DSZR (FNC150) and ZRN
(FNC156) instructions:
[Y002] Clear signal device
specification
M8466
D 8467 to [D]8511 Not used -