Protocol Description
6 RS232 Communications Reference Manual 8/99
2.10 Message Exchange Examples
2.10.1 Read Contiguous 32-bit Values
Below is an example of a Read Contiguous 32-bit Value message exchange.
Example
Read of PV, WSP (Working (or active) Set Point), Output, and Mode from the controller assuming the
function block number for the PID block is 2 (PID2) starting at Index #9.
References
See Subsection 2.9 and Subsection 4.21(Figure 4-1) for formats.
See Subsection 5.47 for PID block dynamic parameters and indices.
Request Message
Host to UMC 800 Controller
10 02 01 ff 01 00 02 04 00 02 02 09 7f 46 10 03
DLE
STX
Destination
Address
Source Address
Sequence Number
Read
Contiguous Values
# of Values
Filler Byte
Dynamic Parameter
Block Number
Index Number
CRC
DLE
ETX
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