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The
source of data for a Multistate Input object will be reading the
remote Modbus register or BACnet server object via the map indicated by
the Device Link. The Modbus device or BACnet object will be polled at
the rate specified by the Read Map. Out
of Service means polling of the Modbus register or BACnet server object
will stop. While out of service, the present value may be written by an
external BACnet client. Data may be forced via this web page at any
time, but will be overwritten by the next Modbus or BACnet poll unless
the object is out of service. Reliability codes may be any of the following: Modbus client, no response (64) Modbus client, crc error (65) Modbus exception, illegal function code (66) Modbus exception, illegal data address (67) Modbus exception, illegal data value (68) Modbus exception, code+65, rarely used (69..79) Local device, configuration property fault (80) BACnet IP client, device timeout (82) BACnet IP client, error returned by server (83)
Status flags A,B,C,D indicate the following, 0 meaning not true, 1 meaning true: A = in alarm B = fault C = overridden D = out of service Device
link will indicate RTU or TCP for Modbus, or BIP for BACnet,
followed by R for read or W for write, and a number which is the rule
number in the table of read or write rules for mapping Modbus or BACnet
to this BACnet object. The designation R means read from Modbus or
BACnet, and W means write to Modbus or BACnet. | | |