Honeywell CIU 888 - Custom Value Map; Supported Modbus Data Types

Appendix H - Creation of new Modbus field device / TRL/2 Field Device
Part No.: 4417584_Rev12 Configuration Manual
CIU 888 H - 50
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H.18 Supported Modbus Data types
Modbus Data types are not standard. Based on the analysis of the
Modbus field devices, the following Modbus data types would be
supported in CIU.
<CustomValueMap>
<CustomValue>
<CIUMapDetail>
<CIUParameterStartBitIndex>
<CustomValueMap>
<CustomValue>
<CIUMapDetail>
<CIUParameterEndBitIndex>
This value indicates the
portion in the CIU parameter
where the device value needs
to be copied.
For example, if the device
value needs to copied to Bits
12 to Bit 8 after value mapping
is done then it BitM = 8 and
BitN = 12
If the the device value (after
value mapping) needs to
completely replace CIU
parameter value then this tag
shall be empty.
Any value as per
Modbus field device
Modbus datasheet
<CustomValueMap>
<CustomValue>
<CIUMapDetail>
<MapDetail>
<DeviceParameterValue>
Device Value in Modbus data
type.
Any value as per
Modbus field device
Modbus datasheet
<CustomValueMap>
<CustomValue>
<CIUMapDetail>
<MapDetail>
<CIUParameterValue>
CIU Value in CIU Parameter
data type.
Any value as per CIU
parameter
Modbus Data
Type
Description
Not a number This data represents 8 / 16 bit coded information.
Fixed number This data represents a 16 bit fixed number.
ASCII string The data represents a string of two ASCII characters per
register.
Unicode string The data represents a string of one UNICODE character per
register
16-bit unsigned
integer
The data represents an unsigned integer.
Range : 0 to 65535
16-bit signed
integer
The data represents an signed integer (in 2’s complement).
Range : -32768 to 32767
XML Tag
Description
Possible Values