LIMIT Control Statement

The LIMIT control statement applies only to the system exception report series. The following is a description of how to use LIMIT control statements for the processor and channel subsystem exception reports.

The LIMIT control statement has the following format for processors:

LIMIT cpu,keyword=nn[,keyword=nn…]

cpu

Is one of the following S/370 processors and its associated channels:

0158
0168
3031
3032
3033

keyword

Is one of the keywords representing the various types of soft machine checks or channel checks covered by the system exception report series.

nn

Is a two-digit decimal value ranging from 1–99. It indicates the minimum number of errors that must be recorded during a 60-minute reference period for the processor or channel to be included on the subsystem exception report. The reference period begins when an error of the type specified in the LIMIT control statement is recorded.

LIMIT keywords for processors and channels are:

DEVICE	TO SET LIMITS FOR	USE KEYWORD
Processor	External damage	EXTD=nn
	Hardware instruction retry	HIRS=nn
	Buffer error	BUFE=nn
Channel	Channel error	CHAN=nn
	Storage error	STOR=nn
	Director error	DRCT=nn
	Control unit error	CTRL=nn

Note:

If you do not supply a number for nn, EREP applies a default value of 01, meaning that all soft errors recorded on processors or channels are included in the printed report. In this case, the line in the report showing the CURRENT LIMITS contains 00 for that keyword.
The LIMIT keywords for processors and channels only apply to soft errors. They represent the types of errors listed:
- Under SOFT MACHINE CHECK in the processor subsystem exception report
- Under the three SERVICE LEVEL INDICATOR categories in the channel subsystem exception report.
Refer to the subsystem exception report examples in and of the EREP User's Guide.
The following STOR and DRCT keywords for channel errors are mutually exclusive:
- STOR applies to the 0158 and 0168 processors
- DRCT applies to the 303X processors
You can set limits for processor and channel errors on separate LIMIT control statements or on the same statement. For example:
```
LIMIT 3033,EXTD=05,HIRS=05,BUFE=03
LIMIT 3033,CHAN=01,DRCT=04,CTRL=08
```
or
```
LIMIT 3033,CHAN=01,DRCT=04,CTRL=08,EXTD=05,HIRS=05,BUFE=03
```
You may not continue a LIMIT control statement from one line to the next. You may code as many separate LIMIT control statements as you need.
The only valid values for the CHAN LIMIT control statement keyword for a 303X processor are CHAN=00 and CHAN=01. If you code any other value for CHAN, EREP processes it as if it were CHAN=01.