Se nti
nel C X T
Sentinel CXT Instruction Manual
Rev. 1.7
Page 36 of 49
The second protective measure is to make sure the power switch is turned OFF while opening the enclosure
and addressing internal components.
The third protective measure is to use static protection while touching any internal components within the
controller enclosure.
The fourth protective measure is to follow these instructions properly and secure the hinged enclosure
cover fully closed before returning unit to the hazardous area.
Once all servicing has been completed turn power ON and verify that all configured gas sensors are reading
the correct value and also verify that the battery charge level is correct.
Once verified, it is safe to return
the unit to active usage.
7.M odbus
™
Sla ve C om m uni
ca ti
ons P ort
A Modbus
™
RTU master can poll the slave port on the CXT Controller allowing the Modbus master to
remotely monitor the status of the CXT. If multiple CXTs are being used on a single Modbus
™
network,
each controller must be set to a different device address. See Section 11.2.3 for more information on setting
the Modbus address.
7.1 M odbus
™
R e gi
ste r M a p
Table 1 CXT Register Map
Channel #
Register
Description
Channel #
Register
Description
Channel 1
40000
Reading
Channel 17
40032
Reading
40001
Status
40033
Status
Channel 2
40002
Reading
Channel 18
40034
Reading
40003
Status
40035
Status
Channel 3
40004
Reading
Channel 19
40036
Reading
40005
Status
40037
Status
Channel 4
40006
Reading
Channel 20
40038
Reading
40007
Status
40039
Status
Channel 5
40008
Reading
Channel 21
40040
Reading
40009
Status
40041
Status
Channel 6
40010
Reading
Channel 22
40042
Reading
40011
Status
40043
Status
Channel 7
40012
Reading
Channel 23
40044
Reading
40013
Status
40045
Status
Channel 8
40014
Reading
Channel 24
40046
Reading
40015
Status
40047
Status
Channel 9
40016
Reading
Channel 25
40048
Reading
40017
Status
40049
Status
Channel 10
40018
Reading
Channel 26
40050
Reading
40019
Status
40051
Status
Содержание SmartWireless CXT
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