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This section provides information regarding communication interfaces
supported by this product.
COM1 & COM2: RS485/RS232/RS422
DB9 Female
Pin number
Signal
1
TX+(RS422/RS485)
2
TXD(RS232)
3
RXD(RS232)
4
RX+(RS422/RS485)
5
GND
6
NC
7
NC
8
TX-(RS422/RS485)
9
RX-(RS422/RS485)
Ethernet Port
1. Fully compliant with IEEE 802.3 / 802.3u standards.
2. 10/100 Mbps support.
3. Connector used: Standard shielded RJ-45 female jack with in-built speed
and link activity indication LEDs.
Pin number
Signal
1
TX+
2
TX-
3
RX+
4
NC
5
NC
6
RX-
7
NC
8
NC
USB Type C
1. USB Type C, compliant with USB 2.0 specification, self-powered device.
2. Connector used: Micro USB Type C Female connector.
USB Host Port
1. USB Host, compliant with USB 2.0 specification
2. USB Host can be used to transfer logged data and historical alarm
to USB memory stick.
3. USB Host can handle only USB memory stick devices and can
source current up to 150mA only.
4. Connector used: Standard USB Type a Female connector.
Pin number
Signal
1
VCC
2
D-
3
D+
4
GND
Cable Diagrams
PC to unit programming cable (RS232):
HMC Unit side (COM2)
2 Wire RS485 connections:
HMC Unit side (COM2)
4 Wire RS485 connections:
HMC Unit side (COM2)
Earthing
The optimum method for Earthing electronic equipment is to earth
it separately from other high-power systems, to earth more than one
unit of electronic equipment with a single-point earth. The Earthing
marked terminal (see below) is provided on the unit.
[Note: Do not use an earth that has an unstable impedance, such as painted
screws or earth subject to vibration.]
CONTROL DRAWING NO# CNTL/DWG/1011-4101AM
HMC4101A-M
WARNING:
-> This equipment is suitable for use in Class I, Division 2, Groups A, B, C and D
or non- hazardous locations only.
-> WARNING – EXPLOSION HAZARD – Do not disconnect equipment unless
power has been removed or the area is known to be non-hazardous.
-> WARNING – EXPLOSION HAZARD - Substitution of components may impair
suitability for Class I, Division 2.
-> WARNING - CAUTION, Battery May Explode If Mistreated. Do Not Recharge,
Disassemble or Dispose of in Fire.
-> The list of materials used in the construction of these devices with name of
sealed device - generic name of the material and the supplier's name and type
designation.
-> It is recommended that the user periodically inspect the sealed devices
used, for any degradation of properties and Replace the device if any
degradation is found.
REVISION HISTORY
Rev.
Description
00
Initial release
Maple Systems Inc® reserves the right to change or discontinue
specifications and features without prior notice.
To view the latest and updated datasheets/manuals, please visit
www.maplesystems.com.
AW-10114101AM Rev. 00, 02/18/22
Date
02/18/2022
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