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Auxiliary Area and CIO Area Allocations Section 4-3
Inner Board Error
Information (CS-series
Serial Communications
Board Only)
A424 contains error information for the Serial Communications Board.
Note 1. When any one of bits 05 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.
For details on errors, refer to Section 11 Troubleshooting and Maintenance.
4-3-2 CIO Area Allocations
Words in the CIO Area are allocated for a Status Area, which contains status
and error information for the Serial Communications Board or Unit. These
allocations are described in this section.
Serial Communications
Boards (CS Series only)
Words CIO 1900 to CIO 1999 in the Inner Board Area are used for a Status
Area. Only the words shown in the following table are used for the Status Area
with Host Link communications.
Inner Board CIO Area
CIO 1900 to CIO 1999
Serial Communications
Units (CS/CJ Series)
Words CIO 1500 to CIO 1899 in the CPU Bus Unit Area in the CIO Area are
allocated according to the unit number setting. Each Unit is allocated 25
words. Only the words shown in the following table are used for the Status
Area with Host Link communications.
Word Bit Contents
A424 12 to 15 Non-fatal
errors
(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: Setup error; 0: Normal
07 1: Routing table error; 0: Normal
06 Reserved
05 1: Cyclic monitoring error; 0: Normal
04 Reserved
03 Fatal
errors
(Note 2)
Reserved
02 Reserved
01 1: Inner Bus error; 0: Normal
00 1: Inner Board watchdog timer error; 0: Normal
Words Usage
CIO 1901 to CIO 1904 Board status
CIO 1905 to CIO 1908 Port 1 status
CIO 1915 to CIO 1918 Port 2 status
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