A-115
Appendices
CJ2 CPU Unit Software User’s Manual
A-3 Auxiliary Area
App
A-3-1 Read-only Area (Set by System)
A216
and
A217
--- Network Com-
munications
Completion Code
Storage Address
The completion code for a communications instruction is automat-
ically stored at the address with the I/O memory address given in
these words. Place this address into an index register and use
indirect addressing through the index register to read the commu-
nications completion code.
Retained Cleared ---
A218 --- Used Communi-
cations Port
Numbers
Stores the communications port numbers used when a communi-
cations instruction is executed using automatic communication
port allocations.
0000 to 0007 hex: Communications port 0 to 7
Retained Cleared ---
A219 A219.00
to
A219.07
Communications
Port Error Flags
ON when an error occurred during execution of a network instruc-
tion (SEND, RECV, CMND, or PMCR).
Bits 00 to 07 correspond to communications ports 0 to 7.
ON: Error occurred
OFF: Normal condition
Retained --- ---
A220
to
A259
A220.00
to 259.15
Basic I/O Unit
Input Response
Times
These words contain the actual input response times.
0 to 17 hexadecimal
When the Basic I/O Unit input response time setting is changed in
the PLC Setup while the PLC is in PROGRAM mode, the setting
in the PLC Setup will not match the actual value in the Basic I/O
Unit unless the power is turned OFF and then ON again. In that
case, the actual value can be monitored in these words.
Retained See func-
tion col-
umn.
PLC Setup
(Basic I/O Unit Input
response time set-
tings)
A260 --- I/O Allocation
Status
Indicates the current status of I/O allocation, i.e., Automatic I/O
Allocation or User-set I/O Allocations.
0000 hex: Automatic I/O allocations
BBBB hex: User-set I/O allocations
Retained Retained ---
A261 A261.00 I/O Table
Creation Error
Details
ON: Error in CPU Bus Unit Setup
Turns OFF when I/O tables are generated normally.
ON: Error in CPU Bus Unit Setup
OFF: I/O tables generated normally
Retained Cleared When I/O tables are
generated
A261.02 ON: Overflow in maximum number of I/O points
Turns OFF when I/O tables are generated normally.
ON: Overflow in maximum number of I/O points
OFF: I/O tables generated normally
A401.11 (Too many
I/O points)
A261.03 ON: The same unit number was used more than once.
Turns OFF when I/O tables are generated normally.
ON: The same unit number was used more than once.
OFF: I/O tables generated normally
A401.13 (dupli-
cated number)
A261.04 ON: I/O bus error
Turns OFF when I/O tables are generated normally.
ON: I/O bus error
OFF: I/O tables generated normally
A401.14
(I/O bus error)
A261.06 ON: I/O table error because a SYSMAC BUS Slave cannot be
detected
Turns OFF when I/O tables are generated normally.
ON: SYSMAC BUS Slave missing
OFF: I/O tables generated normally
---
A261.07 ON: Error in a Special I/O Unit
Turns OFF when I/O tables are generated normally.
ON: Error in a Special I/O Unit
OFF: I/O tables generated normally
---
A261.09 ON: I/O detection has not been completed.
Turns OFF when I/O tables are generated normally.
ON: I/O detection has not been completed.
OFF: I/O tables generated normally
---
A262
and
A263
--- Maximum Cycle
Time (0.1-ms
increments)
These words contain the maximum cycle time since the start of
PLC operation. The cycle time is recorded in 8-digit hexadecimal
with the leftmost 4 digits in A263 and the rightmost 4 digits in
A262.
0 to FFFFFFFF: 0 to 429,496,729.5 ms (0.1-ms increments)
Cleared Cleared ---
Address
Name Function
Status
after mode
change
Status at
startup
Write timing/
Related flags, set-
tings
Words Bits
To Next Page
Loading...
