Parameters accessible with Function Code 03, 06,10h
Analog Input - Function Code 03
54 HC900 Process Controller Communications User Guide Revision 13
April 2017
6.5 Analog Input - Function Code 03
Summary
Not available for versions 4.0 and later. Used to access analog input parameters for the first 8 channels of
the first 8 modules of Rack #1. (Address compatible with UMC800.)
To access any analog input channels use Function Code 04. See page 32.
Analog Input Example: AI1 through AI64. The mapping is with respect to card position starting with the
first card module position and continuing to the 8
th
module position. The first module position would be
AI1 thru AI8. The next AI card in slot 2 would be AI9 thru AI16 and so on.
Function Code Support:
Reads – Function Codes 03 (limited to the first 8 slots of Rack #1)
Table 6-4 Analog Input Value Addresses - Function Code 03
Floating Point
in
Engineering
Units.
Example
Read Analog Inputs 1 and 2 from HC900 at slave address 01 using Function Code 03.
TCP:
RTU:
Response from HC900 where AI1 = 100.0 and AI 2 = 55.32
TCP:
RTU:
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