20mA depending on the measurement and the analog output settings (factory default 4mA=-
100°C and 20mA=+20°C).
Refer to the
PLMa Electrical Connection
diagram in Appendix A, for specific wiring
connections.
The PLMa is equipped with a male M12 connector, which mates to all standard M12 connectors.
The PLMa is supplied with a 3 meter cable with a molded right angle connector. The M12
connector on the PLMa and on the cable are weatherproof.
The PLMaEx and PLMa-Probe-Ex have a explosion proof junction box with pluggable screw
terminal connector. Conduit can be connected to the junction boxes 3/4" NPT port.
6.2.2
Serial I/O RS-232
The PLMa can provide a RS-232 interface. Refer to the
PLMa Electrical Connection
diagram
in Appendix A for connections.
7
Digital Interface - HART
The PLMa is equipped with a HART interface which overlays digital signals on the 4-20mA
loop current. Thus the PLMa can be used in any 4-20mA loop and can simultaneously
communicate digitally on the same two wires.
The PLMa responds to all of the HART Universal (Common Practice) Commands as well as
some important setup and configuration commands.
9