The FA403 by the 'Steam & Condensate Group' of Armstrong International Inc. is designed to monitor the status of wireless connected remote steam trap monitoring devices. The FA403 is equipped with a serial port and it sends status info over this port.

This driver is intended to monitor the steam trap status of multiple devices connected to a FA403.

The following brief notes describe the driver capability

• The driver processes 'Transmitter Status' Messages and ignore all others
• The driver is a passive client – listening passively for messages from the FA403.
• The driver stores the date and time of the last message that was received. This data can be served to a remote client using another protocol.
• The driver stores the status and the id info of the last message that was received. This data can be served to a remote client using another protocol.
• Each time a Transmitter Status message is received the driver validates the message. If valid the driver extracts the System ID and the Transmitter ID. These are used to build an index into a Data Array where the status information will be stored. Thus each system_id / transmitter_id combination can have its status stored at a unique location in a data array. Depending on how the server (say Modbus) is configured, it will be possible to allocate a unique address to each devices' status. For example status of 1,1 could be associated with register 40001, of 1,2 with 40002 etc.
• The driver can be configured to accept / ignore messages containing status information for specific system_id / transmitter_id combinations for a range of combinations.
• The driver expects messages to be sent in hex format from the FA403

Serial
Passive Client