FieldSystemInterface — Interfaces

Configuration

The service reads a JSON configuration file mounted at /etc/edd/field_system_interface/config.json. The file is rendered from the Jinja2 template in roles/field_system_interface/templates/config.json.j2 at provision time.

Parameter	Default	Description
`dbbc_port`	5000	TCP port of the DBBC control server
`mark5_port`	2620	TCP port of the Mark5b recorder
`katcp_port`	7150	KATCP server port of this service
`master_controller_host`	first host in `mastercontroller` group	EDD Master Controller address
`master_controller_port`	7147	EDD Master Controller KATCP port
`n_if`	4	Number of IF channels to monitor
`n_bbc`	16	Number of BBC channels to monitor
`command_timeout`	10.0 s	Timeout for DBBC/Mark5 commands
`sensor_cache_ttl`	1.0 s	Sensor value cache lifetime
`data_store.ip`	Redis host	Redis data store address
`data_store.port`	Redis port	Redis data store port

External Connections

System	Protocol	Direction	Port
DBBC hardware	TCP (DBBC control protocol)	outbound	5000
Mark5b recorder	TCP (MK5 protocol)	outbound	2620
EDD Master Controller	KATCP	outbound	7147
EDD system	KATCP server	inbound	7150
Redis	TCP	outbound	redis_port

POSIX Message Queue

The service writes recording start/stop messages to the VDIFPacker’s POSIX message queue (mq_control) when the Field System initiates a scan.

KATCP Interface

The service exposes a KATCP server on port 7150 and publishes sensors derived from the DBBC and Mark5b state. Exact sensor names depend on the number of IFs and BBCs configured.