Query Types Available; Modbus Rtu Command Types - Honeywell TPPL Modbus TCP Installation And Setup Manual

4.6.2

Query Types Available

Poll No
02
39
40
41
42
43
44
102
103
104
Query Poll Example: 'Query Type: Read Alarm 1 level':
Block Active
Register
(40n01)
1
Value
If Block Active is set to 1, the Controller processes the request. If Block Active is set to 0 the Controller will not process the
request or has already processed the request.
The sole option for 'Channel Type' is 105 – Input Channel.

4.7 Modbus RTU Command Types

Note: Due to a system limitation, TPPL will give an error message 'Command not permitted' during Administrator or
Service log on, but not when accessed by an Operator or User.
MAN0995_Iss 1_01/16
Pt. No. 3011M5027_1
M
ODBUS
Description
Read System Label
Read Alarm 1 level
Read Alarm 2 level
Read Alarm 3 level
Read STEL level
Read LTEL level
Read Rate level
Read Gas Name
Read Channel Tag Name
Read Gas Unit
Table 10.
Channel Type Channel ID
(40n02) (40n03)
105 2
Table 11.
Command Type
23 Alarm Acknowledge
24 Alarm Reset
25 Set Inhibit
26 Clear inhibit
Table 12.
C
ONFIGURATION
Response Format
Unicode String – 35 (Unicode chars) + 1(null)
Float (4 Bytes – 32 bit floating point)
Float (4 Bytes – 32 bit floating point)
Float (4 Bytes – 32 bit floating point)
Float (4 Bytes – 32 bit floating point)
Float (4 Bytes – 32 bit floating point)
Float (4 Bytes – 32 bit floating point)
Unicode String – 35 (Unicode chars) + 1(null)
Unicode String – 35 (Unicode chars) + 1(null)
Unicode String – 35 (Unicode chars) + 1(null)
Query Type Descriptions
Query Type
Result (40n05)
(40n04)
(Updated upon
39
request execution)
Query Poll Example
Description
Command Types
14
Result String
(40n06 to 40n36)
(Updated upon
request execution)
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Modbus Installation Guide