Exception Responses; Table 35. Command Type Example; Table 36. Modbus Exception Responses - Honeywell Touchpoint Pro Technical Handbook

Example: Alarm Acknowledge (Command Type):
Block Active
Register
(41n01)
Value
If Block Active is set to 1, the Controller processes the request, but if Block Active is set to 0 the Controller will not process
the request or has already processed the request.
The options for Channel Type are 105 – Input Channel, 111 – Output Channel and 6 – Global (all channels).
If the Command Data is set to 0, the command will apply to all the channel alarms if a specific channel is identified or to all
channels if the channel type is Global.

11.5 Exception Responses

The Modbus exception response is detailed in the Modicon Modbus manual. Any one of the following exception responses
may be returned by the Touchpoint Pro Modbus interface:
Exception
01 ILLEGAL FUNCTION
02 ILLEGAL DATA ADDRESS
03 ILLEGAL DATA VALUE
06 SLAVE DEVICE BUSY
Note: A function 06 that leaves the block unchanged will not generate this error.
Part. No. 2400M2501_6
CONFIGURATION
Channel Channel ID
Type (41n02)
1 105

Table 35. Command Type Example

Description
Only Modbus functions 02, 03, 04 and 06 are supported. This response is returned if
any other requests are received.
The register addresses supported by each function are listed in this chapter. Any
attempt to access a register outside of these ranges will result in this error.
This exception is returned if the request has the incorrect length, or if the maximum
number of registers is exceeded. The maximum number of registers that can be
requested by function 02 is 512, function 04 is 64, and function 03 is 36 for the Query
poll block or 6 for the Command poll block.
Applies to function 06 only. Once a poll or command block's active register has been
set, its contents must not be changed until the main program has carried out the
request. This exception is returned if any attempt is made to change an active poll or
command block.

Table 36. Modbus Exception Responses

Command
(41n03) Type (41n04)
2 23
101
Command
Result (41n06)
Data (41n05)
(Updated upon
0
request execution)
Technical Handbook
Touchpoint Pro