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Communications Mode
7.5
Overview of Permissible Job Requests in Communications Mode
Data exchange between the CPU and the CP 523 is always initiated by a job request from the CPU.
The CPU transfers the job request to the CP 523 in word 0. The job number is stored in byte 0.
Table 7-32. Permissible Job Requests to the CP 523 in Communications Mode
Job Request
Read the status byte, the status of the
peripheral device and the current clock data
Set the clock (settings in bytes 1 to 7)
Transfer parameter setting data
Initialize the serial interface
Set the XON/XOFF parameters
Select Print mode
Select Transparent mode
Select Interpretive mode
Select 3964(R) mode
Select 3964(R) mode follow-up
job request
Correction value for the integral clock positive
Correction value for the integral clock neg.
Coordinate data transfer
Read status byte and coordination
information
Send message frame
Receive message frame
7-58
Byte 0
7
6
5
4
3
2
1
0
0
0
1
0
9
0
9
0
9
0
9
0
9
0
9
0
9
0
9
0
9
0
A
0
A
0
A
0
CP 523
Byte 1
7
6
5
4
3
2
1
0
0
0
Day of the week
0
0
2
0
7
0
7
1
7
2
7
3
7
A
9
0
9
1
0
0
0
1
8
0
EWA 4NEB 811 6044-02a
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