Ssr4 - ABB 615 Series ANSI Manual

1MAC052634-MB D
3.3.7.4
615/620 series ANSI
Communication Protocol Manual
Bit 8 is set to "1" when an event record has been recorded. The bit is reset when the client
writes the reset code 4 to the event record selection register.
Bit 9 is set to "1" when a fault record has been recorded. The bit is reset when the client
writes the reset code 4 to the fault record selection register.
Table 16: 16 bit SSR3 register
Bit Meaning
0 Unread event records available
1 Unread fault records available
2 0 = not used
3 0 = not used
4 Any MOM bit updated
5 Any indication MCD bit set
6 Device restart bit
7 0 = not used
8 Event record ready for reading
9 Fault record ready for reading
10...15 0 = not used

SSR4

The bit values in SSR4 are Modbus client dependent.
Bits 0...15 in the SSR4 registers correspond to different data categories in the regular
Modbus memory map. Bit 0 corresponds to data category 1, bit 1 to data category 2 and
so on.
If a bit is set to "1", some data belonging to the category in question has changed since the
client last scanned the register. The SSR4 bit or bits are cleared when the register is read.
The data category number for each Modbus data is shown in the Modbus memory map.
The meaning of the category number is available in a separate table. If the data have not
been assigned to any category, the data category number for that data is set to "0".
See the point list manuals for data categories specific to ANSI IEDs.
Vendor-specific implementation
Section 3
27