Campbell CS240, Product Manual

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Table 8-2: Holding register map
Holding register Value
Modbus
data type
Description
40001 Modbus address
Unsigned short
1
Modbus device address (1 to 247)
40002 Baud rate
Unsigned short
1
1 = 9600 bps
2 = 19200 bps
3 = 38400 bps
4 =57600 bps
5 = 115200 bps
40003 Parity
Unsigned short
1
0 = no parity
1 = odd
2 = even
40004 Stop bit
Unsigned short
1
1 = 1 stop bit
2 = 2 stop bits
40005
Termination
resistor
Unsigned short
1
0 = off/disable
1 = on/enable
1
Unsigned short data is a 16-bit positive integer.
8.4 CS240DM and Device Configuration
Utility
Device Configuration Utility (DevConfig) is bundled in Campbell Scientific’s data logger support
software and can also be acquired, at no cost, from
www.campbellsci.com/downloads .
DevConfig can be used to change the CS240DM settings, view stored values, and update the
CS240DM operating system (OS). It also provides CS240DM wiring information.
To use DevConfig, the CS240DM must be connected to a computer and 12 VDC power source. A
USB-to-RS-485 adapter is required to connect the CS240DM to the computer. The following is
the procedure for connecting to DevConfig:
1. Open DevConfig.
2. Under Device Type, click CS240DM.
CS240 and CS240DM PT-1000 Class A, Back-of-Module Temperature Sensors 19