Rockwell Automation 160IB1 InterBus Communication Module - Manual (Page 36)

6–10 Using the 160-IB1 on InterBus
This is an example of a read drive parameter (all values in hex)
The first node on the network is a communication reference (CR) = 2,
with the parameter read access index of 5FF0 (see table 5E) and the
sub-index specifying parameter 8 [Heatsink Temperature].
Once transmitted, the response in
N7:80 provides an echo of the command word
N7:81 number of words following
N7:82 CR
N7:83 result of comms 0=success
N7:84 number of bytes read (in this case 1 word)
N7:85 data read 45 hex = 69 decimal which is the normal value
registered on the heatsink, when temperature is below it.
This is an example of a read attribute drive parameter
(all values in hex)
The first node on the network is a communication reference (CR) = 2,
with the parameter read attribute access index of 5FF4 (see table 5E),
and the sub-index specifying parameter 30 [Accel Time 1].
Once transmitted, the response is similar to above:
N7:85 LSB of 1E is parameter 30, MSB of 1 is multiplier
(see table 5F).
This is an example of a write attribute drive parameter
(all values in hex)
In this example the write access index is 5FF9 (see table 5E) and the
sub-index specifying parameter 30 [Accel Time 1].
N7:73 specifies the number of bytes to write
N7:74 is the data to write
N7:80 provides an echo of the command word
N7:81 number of words following
N7:82 CR
N7:83 result of comms 0=success
N7:84 & N7:85 are not valid, being values that were updated on the
read attribute exercise.