Siemens S5-155U System Manual page 312

Technical Description
0
1
2
3
4
5
6
: OFF
: ON 7
Figure 8-5 Switch Settings for Operation with Process Alarm via IB 0 (Example)
Using two or more 432 digital
input modules with process
alarm via IB 0
Using the 432 digital input
module with other
alarm-generating modules
8 - 14
S1
S2
0
IR-A
IR-B 1
2
IR-C
IR-D 3
IR-E 4
5
IR-F
IR-G 6
INT 7
You can use up to eight 432 digital input modules with process alarm
via IB 0 in one PLC. The modules must all be inserted in the CC or in
the same EU for error-free acknowledgement of address 0. Each
module reserves one bit in IB 0. You must set one module to bit 0 on
switch row S2; on the other modules you must remove jumper X3 and
set one of the other bits 2 to 8.
The module you have set to bit 0 is known as the master, and the other
modules are slaves. On the master module, you must additionally set
the number of slave modules on switch row S2. Refer to the labelling
on the module cover.
You can also use the 432 digital input module with process alarm
together with other alarm-generating modules.
To operate the module with process alarm via interrupt, you must
observe the following:
• • If a process alarm is generated via an interrupt, the I/O words of all
432 digital input modules involved in this process alarm must be
read in the alarm-processing OB; with IPs, the process alarms
must be acknowledged (refer to the manuals of the IPs).
• • The modules must be inserted at interrupt-capable slots (see
Chapter 4).
S3
0
}
Bit 0
1
Bit 1
2
Bit 2
}
3
Bit 3
4
Bit 4
}
5
Bit 5
6
Bit 6
}
7
Bit 7
Byte 0: Positive-Going Edge
Byte 1: Negative-Going Edge
Byte 2: Both Edges
Byte 3: No Process Interrupt
System Manual
C79000-B8576-C199-03
Byte 3
Byte 2
Byte 1
Byte 0