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IP 240
Bit
Abbr.
Meaning when bit is "1"
Job terminated,
0
AFRT
The job request was serviced without error.
Job request acknowledged,
1
AERK
The IP 240 acknowledged recogniton of a job request (can be evaluated
following RESET only).
Data ready,
2
DFRT
The data requested was entered in or fetched from the transfer buffer.
ERRor,
4
ERR
An error has been flagged on the IP 240 and must be read out and analyzed.
IDLE state,
5
IDLE1
Channel 1 not configured.
IDLE state,
6
IDLE2
Channel 2 not configured.
IP 252 expansion,
7
IP252
Both channels configured for IP 252 expansion mode.
Note
In Sections 11.2 and 11.3 you will find detailed information on interchanging data
with the IP 240. Failure to observe the rules and conventions presented in these
sections (e.g. no wait for the relevant bit in the status register) may result in errors
both in the data transfer currently in progress as well as in the next exchange of
data with the IP.
EWA 4NEB 811 6120-02a
Table 11-1. Contents of the Status Register
Direct Data Interchange with the IP 240
11-3
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