Item Function Description
Indoor unit
monitoring
(Batch)
On/Off status*
1
The indoor unit which is now operating can be
monitored in all indoor units.
Maintenance mode status Maintenance status
Emergency stop setting status Emergency stop setting status
Error status
The indoor unit which is now error can be
monitored in all indoor units.
Outdoor unit
monitoring
(Individual)
Outdoor unit low noise Outdoor unit low noise level can be monitored.
Outdoor unit capacity save Outdoor unit capacity save can be monitored.
Error code Status Error code status
Convertor unit
monitoring
(Individual)
Error code Status Error code status
Modbus communication setting
Information
Baud rate/slave address can be monitored.
Model name Convertor model name can be confirmed.
Software version Convertor software version can be confirmed.
NOTES:
• For detailed information, refer to the interface specification posted on “Service & Supports” page
of the web site.
https://www.fujitsu-general.com/global/support/
• *1: To protect the compressor of the outdoor unit, carefully read and understand the following
caution that may affect the operation of compressor before executing the setting.
CAUTION
When performing periodical settings like schedule settings for the following functions, perform
the setting to all indoor units in the same refrigerant system simultaneously, conforming to the
timing restriction described below.
<Corresponding function>
More than 10 minutes
must elapse
More than 10 minutes
must elapse
• Stop operation
• Set indoor unit forced thermostat off mode
• Start operation
• Release indoor unit forced thermostat off mode
• *2: Forced thermostat off instruction
– Only one equipment can send these instructions for each refrigerant system.
– When these instructions are sent by multiple equipment, the system may not respond as in-
structed or may cause malfunction.
3-7. Modbus converter for VRF (UTY-VMGX)
- (05-157) - 3. Adaptor/Convertor units
CONTROL
SYSTEM
CONTROL
SYSTEM
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