
1.2 Modbus Function Code Support
HRT-7(3)10 supports the following Modbus Function Code commands.
[ Table 1: Modbus Function Codes ]
FC
Description
01
Read multiple coils status
02
Read multiple discrete inputs
03
Read multiple Holding registers
04
Read multiple input registers
05 Write
single
coil
06 Write
single
register
15
Force multiple coils
16
Write multiple registers
1.3 Specifications
[ UART Spec. ]
COM: RS-232(3 wire) / RS-422 / RS-485
HRT-710 Connector: 9-pin screwed terminal block
HRT-310 Connector: 4-pin screwed terminal block
Baud Rate: 1200 ~ 115200 bps
Data Format:
[1] data bits : 7/8
[2] parity : None/Odd/Even
[3] stop bit : 1/2
[ HART Spec. ]
Channel number: 1
Connector: 2-pin screwed terminal block
Operates as a HART Master station and supports all HART commands
Frame: Short or Long
Network: Point to Point or Multi-drop
HRT-710 / HRT-310 User Manual
Version 1.31
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