438
FX
3UC
Series Programmable Controllers
User’s Manual - Hardware Edition
C Operation of Special Devices (M8000 -, D8000 -)
C-2 Special Data Register (D8000 to D8511)
Interrupt Program
D 8393
Delay time
M8393
[D]8394
Not used
–
[D]8395
–
[D]8396
–
[D]8397
–
Ring Counter
D 8398
Lower Up-operation ring counter
of 0 to 2,147,483,647
(in units of 1ms, 32-bit)
*1
M8398
D 8399
Upper
*1. 1ms ring counter (D8399, D8398) will operate after M8398
turns ON.
RS2 (FNC 87) [ch1]
D 8400
RS2 (FNC 87) [ch1]
Communication format setting
–
[D]8401
Not used
–
[D]8402
*2
RS2 (FNC 87) [ch1]
Remaining points of transmit data
M8402
[D]8403
*2
RS2 (FNC 87) [ch1]
Monitoring receive data points
M8403
[D]8404
Not used
–
[D]8405
Communication parameter display
[ch1]
–
[D]8406
Not used
–
[D]8407
–
[D]8408
–
D 8409
RS2 (FNC 87) [ch1]
Time-out time setting
–
D 8410
RS2 (FNC 87) [ch1]
Header 1 and 2 <Default: STX>
–
D 8411
RS2 (FNC 87) [ch1]
Header 3 and 4
–
D 8412
RS2 (FNC 87) [ch1]
Terminator 1 and 2 <Default: ETX>
–
D 8413
RS2 (FNC 87) [ch1]
Terminator 3 and 4
–
[D]8414
RS2 (FNC 87) [ch1]
Receive sum (received data)
–
[D]8415
RS2 (FNC 87) [ch1]
Receive sum (calculated result)
–
[D]8416
RS2 (FNC 87) [ch1] Send sum
–
[D]8417
Not used
–
[D]8418
–
[D]8419
Operation mode display [ch1]
–
*2. Cleared when PLC switches from RUN to STOP.
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
*3
RS2 (FNC 87) [ch2] Remaining
points of transmit data
M8422
[D]8423
*3
RS2 (FNC 87) [ch2] Monitoring
receive data points
M8423
Number and
name
Content of register
Correspond-
ing special
device
[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
–
*3. Cleared when PLC switches from RUN to STOP.
Error Detection
[D]8438
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
*4
Special block error code
M8449
[D]8450 to [D]8459 Not used
–
Positioning [FX
3U
and FX
3UC
PLCs]
[D]8460 to [D]8463 Not used
–
D 8464
*4
DSZR (FNC150) and ZRN
(FNC156) instructions:
[Y000] Clear signal device
specification
M8464
D 8465
*4
DSZR (FNC150) and ZRN
(FNC156) instructions:
[Y001] Clear signal device
specification
M8465
D 8466
*4
DSZR (FNC150) and ZRN
(FNC156) instructions:
[Y002] Clear signal device
specification
M8466
[D]8467 to [D]8511 Not used
–
*4. Supported in Ver. 2.20 or later
Number and
name
Content of register
Correspond-
ing special
device
Содержание FX3UC Series
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