Protocol Description
10
RS232 Communications Reference Manual
8/99
2.10.3 Write Scattered 32-bit Values
Below are examples of a Read Scattered 32-bit Value message exchange.
Example 1
Write a local Set Point of 1200.0 to a controller PID block, assuming block number is 3.
Request Message
10 02 01 ff 01 01 03 01 00 02 03 01 44 96 00 00 bf40 10 03
DLE
STX
Destination
Address
Source Address
Sequence Number
Write
Scattered Values
# of Values
Filler Byte
Dynamic Parameter
Block # 3
Index # 1
CRC
DLE
ETX
LSP = 1200.0
Response Message
Controller to Host: (good message)
D L E
S T X
De s t i n at i on
Ad d r e s s
So u r ce A dd r e ss
Se q u e n c e Nu m b e r
Sca t t er ed 3 2 bi t Va lu es
A c k n o w l e d g e
C R C
D L E
E T X
Controller to Host (bad message, with a typical error code)
10|02|FF|01|0a|01|7e|80|10|03
Summary of Contents for RS-232
Page 12: ...Overview 2 RS232 Communications Reference Manual 8 99 ...
Page 24: ...Protocol Description 14 RS232 Communications Reference Manual 8 99 ...
Page 36: ...PC Communication Driver 26 RS232 Communications Reference Manual 8 99 ...
Page 143: ...Function Parameter Index Reference 8 99 RS232 Communications Reference Manual 133 ...
Page 150: ...Index 140 RS232 Communications Reference Manual 8 99 ...
Page 151: ......