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EN | Installation
3.7
Connecting Modbus to external control equipment
Preparations:
• The external control equipment must support Modbus RTU data protocol, which is used for RS485 in order
to communicate with the unit.
Tool
• Torx T 25 screwdriver
• Flat-blade screwdriver (only HERU T)
Connecting Modbus to HERU S:
Connecting Modbus to HERU T:
1 Anslut GND till 0.
AKTAS!
Om ingen ledare är ansluten till terminal 0 kan spänningspotential skada utrustningen.
2 Connect Rx-/Tx- to B.
3 Connect Rx+/Tx+ to A.
NOTE!
For more information on how to confi gure Modbus via the wireless display,
see
5.4 Confi guring the unit for Modbus
.
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Summary of Contents for HERU 100 S EC
Page 2: ......
Page 3: ...1270447_3 3 INSTALLATION EN 5 INSTALLATION SE 47 INSTALLASJON NO 91 ...
Page 42: ...1270447_3 42 EN Connections main board 9 Connections main board ...
Page 86: ...1270447_3 86 SE Anlutningar huvudkort 9 Anlutningar huvudkort ...
Page 130: ...1270447_3 130 NO Tilkoplinger hovedkortet 9 Tilkoplingar hovedkortet ...
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