ABB FSPS-21 - Status Byte and CRC2 Bit Order

DescriptionNameBitOctet
CRC2
Octet 3 (MSB) of 24 bit CRCCRC bit 237N
o
+1
…
CRC bit 160
Octet 2 of 24 bit CRCCRC bit 157N
o
+2
…
CRC bit 80
Octet 1 (LSB) of 24 bit CRCCRC bit 77N
o
+3
…
CRC Bit 00
Status Byte and CRC2 bit order
PROFIsafe messages sent from the FSPS-21 module to the safety PLC include the F-Input
user data, the Status Byte and CRC2.
This table shows the bit order of the Status Byte and CRC2. N
i
is the length of F-Input user
data.
DescriptionNameBitOctet
Status Byte
The value is always 0. Must be ignored by the F-Host.Reserved7N
i
Vconsnr_d has been reset.cons_nr_R6
Toggle bitToggle_d5
Fail-safe values (FV) activated.FV_activated4
Communication fault: Watchdog timeoutWD_timeout3
Communication fault: CRC errorCE_CRC2
Failure exists in the F-Device.Device_Fault1
F-Device has new iParameter values assigned. Not in use. The
value is always 0.
iPar_OK0
CRC2
Octet 3 (MSB) of 24 bit CRCCRC bit 237N
i
+1
…
CRC bit 160
Octet 2 of 24 bit CRCCRC bit 157N
i
+2
…
CRC bit 80
114 PROFIsafe