Technical Specifications

ValVue Digital Communications Software Ver. 2.80
50
GE Oil & Gas
Troubleshooting ValVue Mux
Table 3 Troubleshooting ValVue Used with Mux
Problem Cause Corrective Action
No devices found
Both ValVue and AMS
are connected to the
Mux
Connect ValVue to the device with a modem. If
the installation is correct connect the input to the
MTL 4046P Isolator. In a general purpose system,
connect directly to the device wires.
The MTL Mux is config-
ured for AMS mode
Reconfigure the Mux for Cornerstone communi-
cations mode with MTL provided software.
Mismatch of the baud rate set-
ting between the Mux and ValVue
Mux Use Set Options in ValVue to match the setting of
the Mux. Refer to the dip switch setting on the
Mux.
HART converter (RS-232 to
RS485) not working properly.
Check for loose wires
Check for power
cabling between con-
verter and Mux
Check configuration of converter. Refer to the
manufacturer’s instructions.
Expected device is not found in
Connected Devices list
Device was added
after the Mux per-
formed its last scan
Click the Rescan mode Powering on/off/on the
Mux can also help. However, this impacts the
communication on all devices.
Devices all have the same tag
name in Connected Devices
ValVue and Mux are
not configured as the
same type of master
Set Mux and ValVue so both are Primary Master or
both are Secondary Master.