Command Messages
Chapter Nine: RS-232 Communications
266
Dual Channel Setup Messages
The dual channel feature allows the 146 unit to report pressure from one of two associated
sensors. One sensor controls over a low range; the other sensor controls over the high range.
Dual Channel Setup Messages
Message Description
Message Format
@ command
category
command
number
Parameter
Data
Optional
checksum
Select Dual Channel
@
0
9
1
1 or 2
(dual chan. #)
: UL where
U = Upper #
L = Lower #
CR c1
c2
Dual Channel
Threshold HI
@
0
9
2
1 or 2
(dual chan. #)
: 0 to 25,000,
inclusive
CR c1
c2
Dual Channel
Threshold LO
@
0
9
3
1 or 2
(dual chan. #)
: 0 to 25,000,
inclusive
CR c1
c2
Dual Channel Mode
@
0
9
4
1 or 2
(dual chan. #)
: OFF = off
CNT =
continuous
DSC =
Discontinuous
CR c1
c2
Table 64: Dual Channel Setup Messages
Table 65 lists the chapter that explains the function performed by each message.
Chapter References for Dual Channel Setup Messages
Function
Chapter
Mode of Operation
Chapter Seven: Operation in Setup Mode
Adjust Set Point
Chapter Seven: Operation in Setup Mode
Totaling Co-channel
Chapter Seven: Operation in Setup Mode
Open/Close/Cancel Override
Chapter Four: Operation in Normal Mode
Table 65: Chapter References for Dual Channel Setup Messages
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