Intek RheoVac CMS - Manual (Page 33)

September 2013 29 © Intek, Inc. 2013
Revision D
4.2.4 Modbus Troubleshooting
Problem Cause Solution
No response from CMS
1. System not set for Modbus
communication
2. Incorrect Modbus settings
3. Improper wiring
1. Verify settings in serial.ini file, see Table 8
2. Verify wiring connections
Not enough data
resolution in Multiplied
Integer mode
1. Non-optimal multiplier values set
1. Change the multiplier values in the
MDBSInts.dat file
Multiplier values are
changing
1. The CMS has overflow protection
built in. When [process
variable]*[multiplier value]
exceeds 65535, the instrument
automatically lowers the multiplier
value to retain a usable output.
1. Request the multiplier value along with process
data rather than hard coding the multiplier value
in the client software
2. Lower the multiplier value for each process
variable that reaches the overflow state
3. Use single precision float mode instead of
multiplied integer mode