Siemens CPU 948 User Manual

7.3 Parameters for DX 0
Field ID/length Parameters
1st/2nd word
Meaning
1)
Modes
01xx
2)
1000
1001
D Interrupts at block boundaries
3)
(CPU 946/947: 150U mode)
Interrupts at operation boundaries
4)
(CPU 946/947: 155U mode)
Start-up program execution
02xx 1000
1001
1002
D AUTOMATIC WARM RESTART after POWER UP
AUTOMATIC COLD RESTART after POWER UP
MANUAL COLD/WARM RESTART after POWER UP
2000
2001
D Synchronization of START-UP in the multiprocessor mode
No synchronization of START-UP in the multiprocessor
mode
BB00 00yy
5)
Number of timers to be updated yy:
6)
Permitted values: 00H to FFH
D yy = FF (timer T 0 to T 255)
4000
4001
D Restart type = WARM RESTART
Restart type = RETENTIVE COLD RESTART
Cyclic program execution
04xx 1000 00yy Setting the cycle monitoring time:
7)
Cycle monitoring time = (yy
*
10 ms)
Permitted values: 01H to FFH
D yy = 14H (200 ms)
4000
4001
D Updating of the process image and IPC flags without
semaphore protection
Updating the process image and IPC flags with semaphore
protection (in the field, refer to Section 10.1.3)
Interrupt servicing: timed interrupts
05xx 1000 000c
1001 0000
D Timed interrupt servicing "on"
Timed interrupt servicing "off"
c = level priority, permitted values: 1 to 5
D c = 1 (highest level priority)
Table 7-1 DX 0 parameters and their meaning
Parameters for DX 0
CPU 948 Programming Guide
7 - 8 C79000-G8576-C848-04

Siemens CPU 948 Specifications

General

Brand	Siemens
Model	CPU 948
Category	Controller
Language	English