Configuring Modbus; Modbus Register Allocation For Function 02 - Read Input Status; Table 17. Modbus Parameter Settings; Table 18. Modbus Input Channels - Honeywell Touchpoint Pro Technical Handbook

11 Configuring Modbus

Refer to the documentation supplied with the host computer for details of its communication and Modbus configuration.
Note: It is recommended that the host computer is configured to provide at least two retries in the event of a communication
loss with a minimum delay of 1 s between each poll, and a minimum timeout of 2 s.
Note: TPPR Modbus automatically uses two stop bits when parity is "None" and one stop bit when parity is "Odd" or "Even".
To configure the TPPR Modbus communication parameters:
1. Login as an Engineer.
2. From the System Status screen select the Tool Box icon then Global Settings.
3. Select Modbus Settings> Edit to adjust the parameters.
4. When complete, select Save and exit settings.
Parameter Name
Baud Rate
Parity
Primary Slave
Address
Secondary Slave
Address
11.1 Modbus Register Allocation for Function 02 – Read Input Status
This function reads the input channel status bits. Each status bit can have the value 1 = Active or 0 = Not active. For the
Channel Type only, 1 = Analogue or 0 = Digital. There are twelve status bits for each channel. The maximum number of
status bits read in one frame is 512.
Rate LTEL STEL
Channel
Alarm Alarm Alarm
01 10001 10002 10003
02 10017 10018 10019
↓ ↓ ↓ ↓
64 11009 11010 11011
Rate LTEL STEL
Alarm Alarm Alarm
Channel
(Not (Not (Not
used) used) used)
5 11073 11074 11075
02 11089 11090 11091
↓ ↓ ↓ ↓
128 13105 13106 13107
Part. No. 2400M2501_6
CONFIGURATION
Default Setting
9600
None
1
2

Table 17. Modbus Parameter Settings

Alarm 3 Alarm 2 Alarm 1 Inhibit
10004 10005 10006 10007
10020 10021 10022 10023
↓ ↓ ↓ ↓
11012 11013 11014 11015

Table 18. Modbus Input Channels

Alarm 3 Alarm 2
(Not (Not Alarm 1 Inhibit
used) used)
11076 11077 11078 11079
11092 11093 11094 11095
↓ ↓ ↓ ↓
13108 13109 13110 13111

Table 19. Modbus Output Channels

Value Range
9600, 19200
Even, Odd, None
1 to 247
1 to 247
Channel Not
Fault No Data
Type Used
10008 10009 10010 10011
10024 10025 10026 10027
↓ ↓ ↓ ↓
11016 11017 11018 11019
Channel
Type Force
Fault No Data
(Not State
used)
11080 11081 11082 11083
11096 11097 11098 11099
↓ ↓ ↓ ↓
13112 13113 13114 13115
96
Comment
Should be set to correspond to the baud
rate of the host system.
Should be set to correspond to the parity
checking set on the host system.
Each node connected to the RS485
highway must have a different address
setting in daisy chain or multi-drop
configuration.
SIL Channel Safe State
Warning
(Future Use) (Future Use)
10012 10013 10014
10028 10029 10030
↓ ↓ ↓
11020 11021 11022
SIL Channel Safe State
Warning
(Future Use) (Future Use)
11084 11085 11086
11100 11101 11102
↓ ↓ ↓
13116 13117 13118
Not
Acknowledged
Used
10015 10016
10031 10032
↓ ↓
11023 11024
Acknowledged Free
11087 11088
11103 11104
↓ ↓
13119 13120
Touchpoint Pro
Technical Handbook