Daikin EUWAN20KBZW1 - 2.8 Option EKAC10 C Address Card

ESIE11-02 The Digital Controller
Part 2 – Functional Description 2–39
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2
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5
1
2.8 Option EKAC10C Address Card
Overview
Remark
■ Modbus communication RS485/RTU only
■ Modbus communication RS485 and remote user interface is not possible at the same time
■ No BACnet possibility
■ The RS485 communication settings for Modbus protocol are:
■ baudrate: 9600
■ stop bit: 2
■ parity: none
Controller settings Following parameters have to be programmed to activate Modbus communication:
■ H23: select 1 to enable Modbus communication
■ H10: select serial address of the chiller
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2
3
2
24
31
56
75 55
85
+
+
2x 0.35 mm
2
/ AWG 22
120 Ω (1/4 W 120 Ohm)
1
EKAC10CEKAC10CEKAC10C
GND
T+
T–
h10 = 1
h10 = n
120 Ω
BMS
GND
T+
T–
1..
EKAC10C
...n
EKAC10C
GND
T+
T–
3
EKAC10C
+
BMS
EKAC10C
+
EKRUMCA