Appendix A - Nmea 2000 Interfacing; Clmd16 Nmea 2000 ® Periodic Data Transmitted Pgn S; Pgn 127500 - Load Controller Connection State/Control; Pgn 127501 - Binary Status Report - Maretron MPOWER CLMD16 User Manual

CLMD16 User's Manual
This appendix is intended to relate specific characteristics of the CLMD16 to how they are
communicated via NMEA 2000 ® messages in order to help ascertain whether the messaging
implemented by the CLMD16 is compatible with other NMEA 2000 ® products. It is not a complete
description of the messages. If you require detailed information on the messages, please obtain a
copy of the NMEA 2000 ® standard documents from the National Marine Electronics Association
(www.nmea.org).
CLMD16 NMEA 2000
PGN 127500 – Load Controller Connection State/Control
The CLMD16 uses this PGN to transmit the state of each of the breakers. A separate occurrence of
this message will be transmitted for each breaker. The state of each breaker may be controlled by
issuing a 126208 NMEA Command for this message addressed to this device.
Field 1: Sequence ID – This field is transmitted with a value of 255.
2: Connection ID – This field identifies the output channel (breaker) whose status is being
reported in this message. The value of this field will be in the range of 0 (Breaker #1)
through 15 (Breaker #16).
3: State – This field indicates the state of the solid-state breaker.
4: Status – This field indicates the status of the solid-state breaker.
5: Operational Status & Control – This field is used to lock and unlock the solid-state breaker.
6: PWM Duty Cycle – This field is used to control and report the PWM duty cycle of the solid-
state breaker.
7: Time ON – This field is used to report the ON time if the solid-state breaker is running
under the control of a flash element.
8: Time OFF – This field is used to report the OFF time if the solid-state breaker is running
under the control of a flash element.
The CLMD16 uses this PGN to transmit the state of each of the breakers and connected switch
inputs. The state of the breakers may be controlled by issuing a 126208 NMEA Command for this
message addressed to this device.
Field 1: Indicator Bank Instance – This field identifies the particular switch bank to which this PGN
applies. Please refer to Instance on page 32 for instructions on how to program the value
of this field.
2: Indicator #1 – This field indicates the state of the solid-state breaker on output channel #1.
The state will be one of the following values:
• "OFF" – The breaker is open – no current is supplied to the load.
• "ON" – The breaker is closed – current is supplied to the load.
• "Error" – The breaker is open due to an error condition.
3 to 16: indicates the state of the solid-state breaker on outputs on channels 2 to 16 respectively.
18: Indicator #17 – This field indicates the state sensed by the digital input on input channel #1.
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Appendix A – NMEA 2000
PGN 127501 – Binary Status Report
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Periodic Data Transmitted PGNs
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Interfacing
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