Instruction Manual
Tek-LCD 7801C
www.tek-trol.com
Technology Solutions
70
•
The data type must match the type required by the server device; otherwise, the value will not
be correct.
o
Server ID
o
Register Address (Base 0)
o
Select Enron, if applicable
o
Function Code
o
Data Type – Reg. No. displayed automatically
o
Byte Order
o
Engineering Units and decimals to be used
o
Post Time: How often to write to the server
o
Output Action: Select from many actions available or leave as None
6.53
Setup Modbus Output (Spoofer)
•
The Modbus Spoofer feature is part of the Modbus Client/Snooper add
-on feature. To enable
this feature, you must purchase a Tek-LCD 7801C-M1 and enter the key in the System –
General menu.
The controller must be configured as a Modbus Server/Snooper in the System
– Modbus menu. See page 67 for instructions on how to enable the Add-
On Features.
•
The Spoofer Modbus output is used to replace Modbus devices that have been removed from
the network; there is no need to make changes to the client’s configuration.
•
The Modbus Output menu allows assigning up to 99 Modbus register sets (1 to 4) to output
any of the values available in the system (e.g. PV channels, Totals, Relay Runtime, etc.) and
selecting the desired data type from bit-logic to float 64.
•
The supported function codes are: 0x01, 02, 03, 04. For outputting the value from a channel
use function code 0x03, enter the registers address base
-
0 (e.g. Reg. Address 4400 = Reg.
Number 44401).
o
Edit the Modbus Output tag
o
Select the source for the output
o
Select the data type
o
The register number is displayed automatically
•
Select the input for Modbus Output.
