Monitor Flag Register; I/O Module Dependant Fault Flags; Table 2 Monitor Flag Register; Table 3 Digital Output Fault Flags - ABB Triguard SC300E Safety Manual

3.5.7

Monitor flag register

The setting of bit 3 in the 'FALT' call register above results from any bit being set in the 16 bit
monitor flag register. These bits are set in the shared RAM on the common Interface by the
microcontroller and read by the main processors.
Bit Reference
0 Microcontroller
health A
1 Microcontroller
health B
2 Microcontroller
health C
3 MPP A health
4 MPP B health
5 MPP C health
6 Power fault
7 Reserved
8 Reserved
9 Reserved
10 Reserved
11 Reserved
12 Programmatic
Health – A
13 Programmatic
Health – B
14 Programmatic
Health – C
15 Reserved
3.5.8

I/O module dependant fault flags

The 16 bit fault flag register has a format dependant on the I/O module type.
Currently only the DO and Piano and Analogue output modules are supported.
Bit Description
0 Logic Supply A power fail fault
1 Logic Supply B power fail fault
2 Logic Supply C power fail fault
3 Field Supply A power fail fault
4 Field Supply B power fail fault
5 Field Supply C power fail fault
6 Bias Supply 1 power fail fault
7 Bias Supply 2 power fail fault
8 Logic supply power fail fault
9 Reserved
10 Reserved
11 Drive Supply A power fail fault
12 Drive Supply B power fail fault
13 Drive Supply C power fail fault
14 Field supply power fail fault
15 Over temperature fault (not currently implemented in hardware)
Bit Description
0 Logic Supply A power fail fault
Issue 5 - September 2006
Description
Microcontroller A watchdog timer timed out
Microcontroller B watchdog timer timed out
Microcontroller C watchdog timer timed out
MPP A watchdog timer timed out
MPP B watchdog timer timed out
MPP C watchdog timer timed out
Any power fault on the module
Health Lamp turned off by microcontroller A
Health Lamp turned off by microcontroller B
Health Lamp turned off by microcontroller C

Table 2 Monitor Flag Register

Table 3 Digital Output Fault Flags

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