WindO/I-NV4 User’s Manual 35-39
3 HG4G/3G, HG2G-5F
35
MICRO/I Specifications
● Serial Interface (COM2)
Use applicable cables for wiring and recommended ferrules (made by Phoenix Contact or Weidmüller) as follows.
• Terminating Resistor Selector Switch (for RS422/485 interface)
When using RS422/485 interface, set the Terminating Resistor Selector Switch to the ON side. This will connect the
internal terminating resistor (120Ω) between RDA and RDB.
●
Expansion Module Interface (EXT)
IDEC MICROSmart expansion modules can be connected to the HG4G/3G, HG2G-5F.
Refer to Chapter 30 “1.2 Applicable Expansion Modules” on page 30-2 for the number, the types and the combination
of the expansion modules that can be installed.
Interface Specification RS232C, RS422/485
Connector Detachable Terminal Block 9-pin
Applicable cable AWG20 to AWG22
Recommended ferrule
AI 0,34-8 TQ
AI 0,5-8 WH
AI-TWIN 2 x 0,5-8 WH
(Phoenix Contact)
H0,34/12 TK
H0,5/14 OR
H0,5/14 ZH OR
(Weidmüller)
Tightening Torque 0.22 to 0.25 N•m
No. Name I/O Function Communication type
1 SD OUT Send Data
RS232C
2 RD IN Receive Data
3 RS OUT Request to Send
4 CS IN Clear to Send
5 SG ― Signal Ground
RS422/485
6 4W-SDA OUT Send Data (+) [4W]
7 4W-SDB OUT Send Data (-) [4W]
8 4W-RDA/2W-A IN/INOUT
Receive Data (+) [4W]/ Send and Receive Data
(+) [2W]
9 4W-RDB/2W-B IN/INOUT
Receive Data (-) [4W]/ Send and Receive Data (-)
[2W]
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