Rockwell Automation 1794-OF8IH FLEX Isolated Input/Output HART Analog Modules - Manual (Page 67)

Publication 1794-UM065B-EN-E - September 2010
1794-IF8IH and 1794-OF8IH Configuration 55
HART Loop Status (8 of 8 bits):
This byte indicates the Status of the HART loop from the I/O modules point
of view. This byte is generated by the I/O module itself and not from the
HART FD.
HART PV Status (8 of 8 bits):
This byte indicates the status of the HART variables (primary, secondary, third
and fourth).
HART Loop Status
HART Loop Status
Bit 0 (1)
HCS_COMM_ENABLED, HART is enabled on this channel.
Range: 0 = HART not enabled on this channel, 1 = HART enabled on this channel
(1) HCS — HART Communications State machine
Bit 1 HCS_CONNECTED, A connection has been established with this device.
Range: 0 = no HART connection on this channel, 1 = HART connection on this
channel
Bit 2 HCS_RESPONSE_ERROR, A HART message attempt ended in failure.
Range: 0 = no HART message failures, 1 = HART message attempt failed
Bit 3 HCS_CMD48_UPDATE, Extended HART status (Command 48) was updated.
Range: 0 = extended HART status (Command 48) was not updated, 1 = extended
HART status (Command 48) was updated
Bit 4 HCS_ILOOP_TOLERANCE, HART Current Fault loop current fault.
Range: 0 = no HART Current Fault loop current fault, 1 = HART Current Fault loop
current fault
Bit 5 HART_update, The HART Field Device data for the channel has been updated
since last read.
Range: 0 = no HART FD data update, 1 = new HART FD data available
Bit 6 HART_Message, The channel's HART message queue has completed a message
since request has been received.
Range: 0 = no HART message has completed, 1 = a HART message has completed
Bit 7 Reserved
HART PV Status
Bit 0 The primary variable for this channel has been acquired.
Bit 1 The secondary variable for this channel has been acquired.
Bit 2 The third variable for this channel has been acquired.
Bit 3 The fourth variable for this channel has been acquired.
Bit 4 Reserved