GE 90-30/20/Micro Svcreq #15 Read Last-Logged Fault Table Entry, PLC Fault Table Output Format

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SVCREQ #15: Read Last-Logged Fault Table Entry

Use SVCREQ function #15 in order to read the last entry logged in either the PLC fault table or the I/O fault table. The SVCREQ output is set ON unless some number other than 0 or 1 is entered as the requested operation (see below), or the fault table is empty. (For additional information on fault table entries, refer to chapter 3, “Fault Explanations and Correction.”)

For this function, the parameter block has a length of 22 words. The input parameter block has this format:

0 = Read PLC fault table.

1 = Read I/O fault table.

address

The format for the output parameter block depends on whether the function reads data from the PLC fault table or the I/O fault table.

PLC Fault Table Output Format

Low Byte High Byte

0

long/short

spare

PLC fault address

fault group and action

error code

fault specific data

time stamp

address + 1 address + 2 address + 3 address + 4 address + 5 address + 6 address + 7 address + 8 address + 9 address + 10 address + 11 address + 12 address + 13 address + 14 address + 15 address + 16 address + 17 address + 18 address + 19 address + 20 address + 21

I/O Fault Table Output Format

Low Byte		High Byte
	1
long/short
reference address
I/O fault address
fault group and action
fault category		fault type
fault description

fault specific data

time stamp

4-156 Series 90-30/20/Micro Programmable Controllers Reference Manual–September 1998 GFK-0467K