Parameter reference
8.8 Communication (4.)
HydroRanger 200 HMI
270 Operating Instructions, 06/2018, A5E36281317-AC
Modem inactivity timeout (4.10.)
Sets the time that the device will keep the modem connected with no activity.
Communications Port
Range: 0 ... 9999 seconds
Preset: 0 (No timeout)
Modem available (4.9.) (Page 269)
Modem Inactivity Timeout (4.10.)
To use this parameter, ensure that Modem Available (4.9.) (Page 269) = Answer only.
Ensure that the value is low enough to avoid unnecessary delays when an unexpected
disconnect occurs but long enough to avoid timeout while you are still legitimately
connected. This parameter value is ignored by the Modbus Master Drivers, as they
automatically disconnect when done.
If the line is idle and the Modem Inactivity Timeout (4.10.) expires, then the modem is
directed to hang up the line. Ensure that Modem Inactivity Timeout (4.10.) is set longer than
the standard polling time of the connected master device. 0 disables the inactivity timer,
meaning there is no timeout.
Parameter index location (4.11.)
Determines where index information is stored for the parameter access area.
Protocol (4.4.) (Page 268)
The primary and secondary index values are global (they affect all of the parameter access
area at once) and stored in:
● Primary index – R43,999
● Secondary index – R43,998
The primary and secondary index values are encoded into the format words found between
R46,000 and R46,999. Each format word corresponds with the R44,000 series number in the
parameter access map. For example, the format register R46,111 corresponds to the
parameter Relay Function (2.8.1.4.) and the value is stored in R44,111. If the Modbus
protocol (4.4. Protocol = [Modbus ASCII slave serial] or [Modbus RTU slave serial]) is not
used, this parameter is ignored.
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