Technical Specifications

Masoneilan Valves ValVue ESD Instruction Manual =| 67
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Troubleshooting ValVue ESD Used with Mux
Table 3 lists some of the problems, causes, and corrective actions you may encounter when
setting up ValVue ESD used with a multiplexor (Mux).
Table 3 Troubleshooting ValVue ESD Used with Mux
Problem Cause Corrective Action
No devices found Both ValVue ESD and AMS are
connected to the Mux
Connect ValVue ESD to the device with a
modem. If the installation is fundamentally safe
connect the input to the MTL 4046P Isolator. In a
general purpose system, connect directly to the
device wires.
The Mux is configured for AMS
communication
Reconfigure the Mux for Cornerstone communi-
cations mode with MTL provided software.
Baud rate setting does not
match setting
Mux Use Set Options in ValVue ESD to match the set-
ting in 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 converter 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 performed its last scan
Click the Reset Mux button to update or power
off/on the Mux.
Devices all have the same tag
name in Connected Devices
ValVue ESD and Mux are not
configured as the same type of
master
Set Mux and ValVue ESD so both are Primary
Master or both are Secondary Master.