86
I/O Memory Allocations Section 2-3
Inner Board Error Information
Note 1. When any one of bits 04 to 11 is ON, A40208 (Inner Board Error Flag)
(non-fatal error) will be ON.
2. When bit 00 or 01 is ON, A40112 (Inner Board Fatal Error Flag) will be ON.
3. This bit turns ON if a TXD(236)/RXD(235) instruction is sent during no-pro-
tocol communications to an Inner Board that does not support no-protocol
mode (no Unit Ver. indicated).
For details on each type of error, refer to Section 11 Troubleshooting and
Maintenance.
Restart Bit: A60800
The Restart Bit can be turned ON and then OFF to restart the Serial Commu-
nications Board without turning OFF the PLC power supply.
Word Bit Contents
A424 12 to 15 Non-fatal
errors
(see note
1)
Reserved
11 1 Error log EEPROM error; 0: Normal
10 1: Protocol macro execution error; 0: Normal
This bit will be turned ON when code 3, 4, or 5 is
stored in the error code for bits 00 to 03 of CIO 1909
or CIO 1919 in the CIO Area,
09 1: Protocol data error (SUM error); 0: Normal
08 1: System Setup error; 0: Normal
07 1: Routing table error; 0: Normal
06 Reserved
05 1: Cyclic monitoring error; 0: Normal
04 1: Inner Board service disabled (See note 3.); Nor-
mal
03 Fatal
errors
(see note
2)
Reserved
02 Reserved
01 1: Inner Bus error; 0: Normal
00 1: Inner Board watchdog timer error; 0: Normal
Bit Function
A60800 Inner Board Restart Bit
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