App - 87
Appendix 2 Special Register List
APPENDICES
(15)I/O module verification
(16)Process control instructions
TableApp.33 Special register
Number Name Meaning Explanation
Set by
(When Set)
Corres-
ponding
ACPU
D9
Corresponding
CPU
SD1400
I/O module
verify error
Bit pattern, in units
of 16 points,
indicating the
modules with
verification errors.
0 : No I/O
verification
errors
1 : I/O verification
error present
• When the I/O modules whose I/O module information differs from that
registered at power-ON are detected, the numbers of those I/O modules
are entered in bit pattern.
(If the I/O numbers are set by parameter, the parameter-set numbers
are stored.)
• Also detects I/O module information.
• Not cleared even if the blown fuse is replaced with a new one.
This flag is cleared by error resetting operation.
S (Error)
D9116
QnA
Qn(H)
QnPH
QnPRH
QnU
Rem
SD1401 D9117
SD1402 D9118
SD1403 D9119
SD1404 D9120
SD1405 D9121
SD1406 D9122
SD1407 D9123
SD1408 New
SD1409
to
SD1430
New
SD1431 New
TableApp.34 Special register
Number Name Meaning Explanation
Set by
(When Set)
Corres-
ponding
ACPU
D9
Corresponding
CPU
SD1500
SD1501
Basic period Basic period tome
• Set the basic period (1 second units) use for the process control
instruction using floating point data.
UNew
Q4AR
QnPH
SD1502
Process control
instruction detail
error code
Process control
instruction detail
error code
• Shows the detailed error contents for the error that occurred in the
process control instruction.
S (Error) New
SD1503
Process control
instruction
generated error
location
Process control
instruction
generated error
location
• Shows the error process block that occurred in the process control
instruction.
S (Error) New
SD1506
SD1507
Dummy device Dummy device • Used to specify dummy devices by a process control instruction. U New
QnPH
QnPRH
SD1508
Function
availability
selection for
process control
instruction
b0
Bumpless function
availability setting
for the S.PIDP
instrunction
0: Enabled
1: Disabled
(Default: 0)
• Selects the availability (enabled/disabled) of the function for process
control instructions.
UNew
QnPH
QnPRH
b15
b14
b13
b12 b11
b10 b9 b8 b7 b6 b5
b4
b3
b2 b1
b0
000 000 0000000SD1400
00 0 00000000SD1401 00
0 0 0000 000
SD1431
0000
Indicates an I/O module verify error.
00
00
00
1
X Y
0
1
X Y
190
1
X Y
1FE0
SD1501 SD1500Floating point data =
b0
00
0
I/0
b15 b14 to
Bumpless function availability for
the S.PIDP instruction
b1b2
SD1508
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