Table 6-3 Setting Options; Table 6-4 Performance Calculation - Siemens SENTRON PAC RS485 Manual

Configuration
6.3 Configuration of the PAC RS485 expansion module on the SENTRON PAC3200 Power Monitoring Device
"Response time":
If the Power Monitoring Device communicates over the RS 485 bus with an older
MODBUS module from another manufacturer, it may be necessary to delay the response of
a slave to a request from the master. The response time corresponds to the set baud rate. At
baud rates ≥ 19200 bit/s, the response time corresponds to a character interval of at least
3.5 with regard to the configured baud rate.
Table 6-3
Setting
0 = Auto
1 ... 255
If you change the baud rate to a value that does not suit the response time set, the program
sets the response time to "Auto".
Table 6-4
Baud rate
4800 baud
9600 baud
≥ 19,200 baud
See also
Changing the address (Page 57)
Character frame (Page 30)
60
Setting options
Meaning
The device automatically sets a response time suitable to the baud rate. This is
the minimal response time.
Response time in ms
Performance calculation
Calculated response time
At least 9 ms
At least 5 ms
At least 3 ms
PAC RS485
Manual, 02/2008, A5E02091800B-01