ComAp InteliLite MRS16, Руководство пользователя

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InteliLite Global Guide
144
Modbus TCP examples
Reading of Battery voltage
Export table of values from LiteEdit
Table: Values
Allowed MODBUS functions: 03, 04
Register(s) Com.Obj. Name Dimension Type Len Dec Min Max Group
01053 8213 BatteryVoltage V Integer 2 1 0 400
Controller
I/O
Request: (Numbers in Hex)
00 00 00 00 00 06 01 03 04 1D 00 01
transaction
identifier
(usually 0)
protocol
identifier
(usually 0)
Length of
data bytes
following
Controller
address
Modbus
function
Register address
041D
hex
= 1053
dec
Number of
registers
Request: (Numbers in Hex)
00 00 00 00 00 06 01 03 04 1D 00 01
transaction
identifier
(usually 0)
protocol
identifier
(usually 0)
Length of
data bytes
following
Controller
address
Modbus
function
Register address
041D
hex
= 1053
dec
Number of
registers
Response: (Numbers in Hex)
00 00 00 00 00 05 01 03 02 00 F0
transaction
identifier
(usually 0)
protocol
identifier
(usually 0)
Length of
data bytes
following
Controller
address
Modbus
function
Length of data
02
hex
= 2 bytes
read
Data
00F0
hex
= 240
dec
We read value 240 from register 01053. From table of modbus registers we get dimension of read value and
"Dec". Dec=1 means shift one decimal place to the right. So battery voltage is 24.0 V .
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