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HMC7000 Series Installation Guide
1010-1042 Rev 00
www.maplesystems.com
Connecting to Peripherals
I/O Expansion Modules
The HMC7000 Series (except for the HMC7030A-L) support I/O expansion modules. These modules are used to connect
directly to digital/analog inputs and outputs in an industrial system.
Below is a list of the current I/O expansion modules supported:
I/O Module Part No.
Description
HMC7-MI-01
16 Digital Inputs (sinking or sourcing)
HMC7-MI-02
4 Analog Inputs (0-10 V, -10 to +10V, 0-20mA, 4-20mA)
HMC7-MO-01
12 Digital Outputs (Relay type)
HMC7-MIO-01
8 Digital Inputs (PNP or NPN), 8 Digital Outputs (NPN 0.5A)
HMC7-MIO-02
8 Digital Inputs (PNP or NPN), 8 Digital Outputs (PNP 0.5A)
HMC7-MIO-03
2 Analog Inputs (0-10 V, -10 to +10V, 0-20 mA, 4-20mA), and
2 Analog Outputs (0-10 V, 0-20mA, 4-20mA)
* For more detailed specifications on each I/O module, see HMC7000 Programming Manual
Common Terms for I/O Modules
This section defines some common terms that are used to describe various types of input and output modules. The terms
explained below are generic descriptions. Be sure to consult the datasheet for the I/O module you use for specific
requirements when installing and wiring the module.
Digital Modules
Expansion modules that have digital inputs and/or digital outputs are termed ‘digital modules’. The term ‘digital’
signifies that the signal is interpreted by the module to be discrete levels, either an ON state (1) or OFF state (0). Each
digital input contact is tagged to an internal Input Coil (X) in the tag database of the HMC7000. Similarly, each digital
output contact is tagged to an Output Coil (Y).
Analog Modules
Expansion modules that have analog inputs and/or analog outputs are termed ‘analog modules’. The term ‘analog’
denotes that the signal is interpreted by the module as an analog signal with continuous (not discrete) levels, depending
upon the resolution. The signal level varies according to current or voltage. Each analog input contact is tagged to an
internal Input Register (XW) in the tag database of the HMC7000. Similarly, each analog output contact is tagged to an
Output Register (YW).
Sinking versus Sourcing Inputs
These terms are used to indicate the method of wiring inputs and outputs of DC modules. Any module that is not
bidirectional (meaning current can go in either direction) requires that the circuit attached to each module contact (i.e.
input or output) conduct current in a specific direction (sink or source). Each circuit attached to the contact must have a