I/O : A-Series

A-Series I/O and Communication Modules
SoftPLC offers a low cost, distributed I/O product line, which we call the "A Series". Modules are available for ethernet and serial networks. Also available in this product line are media converters.
All A-Series products are compact, DIN rail mountable, and can be mounted side-by-side or stacked piggy-back atop each other for small physical space applications.
The A-Series modules provide cost-effective protection and conditioning for a wide range of industrial control signals and systems. These modules are ideal when you have only a few I/O points, or need to distribute a small number of I/O points in several locations and you don't want to incur the overhead/cabling cost of a fieldbus network (eg: Profibus or DeviceNet).

Applications include HVAC controls, sorting conveyors, utilities, and remote installations. One example is a weather station: the SoftPLC controller is installed atop a mountain and uses the A-Series I/O to monitor weather conditions (eg: temperature, wind speed/direction, humidity), which are made available to the public via a SoftPLC-based web page.
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Overview
A-Series I/O modules are a family of compact and networkable data acquisition and control modules, with a wide range of available analog and digital input/output signal types. All modules are designed for reliable operation in harsh environments and are equipped with isolation and failure protection, and high resistance against noise-interference. The "robust" serial modules (Models ASIO-41xx) can operate in temperatures from -40 to 85°C.
Ethernet modules are available for ModbusTCP (Models AEIO-60xx) and EthernetIP (Models AEIO-61xxEI) protocols. Dual Ethernet port modules (Models AEIO-62xx, AEIO-61xxEI) can be easily daisy-chained without the need for ethernet switches.
The Serial modules (Models ASIO-4xxx) use the ModbusRTU protocol via RS-485, the industry's most widely used bi-directional, balanced transmission line standard. These modules can be used with any SoftPLC controller.
All modules include these standard features:
- Mounting Options - DIN-rail (side-by-side or piggy-back) or panel/wall mount
- Removable screw terminals for signal wires to replace module without re-wiring
- Wide input power ranges (eg: 10-30VDC)
- Low power consumption
- LED's for ease in troubleshooting wiring and communication network
- Watchdog timer supervisory function automatically resets modules in the event of system failure
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Specifications
Individual module specifications are available from the "Modules" tabs. All A-Series modules conform to the general specifications below:
MODELS ASIO-40xx
RS-485ASIO-41xx
RS-485 RobustAEIO-60xx
ModbusTCPAEIO-61xx
EnetIPAEIO-62xx
ModbusTCPModule Dimensions 110 x 60 x 27 mm (HxWxD) Power Input 10-30 VDC (24VDC standard) Operating Temperature 32°F~158°F (0°C~70°C) -40°F~185°F (-40°C~85°C) 14~158°F (-10~70°C) Storage Temperature -40 ~ 185°F (-40°C~85°C) -4 ~ 176°F (-20°C~80°C) Relative Humidity 0%~95%, non-condensing 20%~95%, non-condensing Communication Network Connection Plug-in screw terminal block (1) RJ-45 (LAN) (2) RJ-45 (LAN) I/O and Power Connections (2) Plug-in screw terminal blocks, #14 ~ 22 AWG Construction Material Impact resistant ABS plastic Certifications & Compliances CE, FCC rated, ROHS Compliant
Most modules UL, UL(C) rated
Available A-Series Serial RS-485 Modules
A wide variety of A-Series serial RS-485 I/O modules are available - digital, analog, and special purpose modules and interface to SoftPLC PACs with the Modbus Master driver or COMGENIUS.
Type | Number of Points | Rated Current/Point | Catalog Number | Data Sheet | Store |
TOP | |||||
Thermocouple/Analog Input | 8 | +/-20 mA, 4~20 mA
Type J, K, T, E, R, S, B +/-(15mV,50mV,100V,500mV,1V,2.5V) |
ASIO-4118 | ![]() |
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RTD | 6 | Pt 100/1000, Ni Balco500 2 or 3-wire |
ASIO-4015 | ![]() |
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Analog Input | 8 | 0~150mV, 0~500mV, 0~1V, 0~5V, 0~10V, 0~15V +/-(150mV, 500mV, 1V, 5V, 10V, 15V) 0~20mA, 4~20mA, +/-20mA |
ASIO-4117 | ![]() |
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Analog Output | 4 | 0~20mA, 4~20mA, +/-10V | ASIO-4024 | ![]() |
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Digital | 7/8 | (7) Inputs: 10~48 VDC (8) Outputs: 40V, 1A max |
ASIO-4150 | ![]() |
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Digital Input | 16 | 50V max | ASIO-4051 | ![]() |
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Digital | 8/8 | (8) Inputs: 10~30 VDC (8) Outputs: 200mA max load |
ASIO-4055 | ![]() |
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Digital | 12 | 10~35 VDC, 200mA max load Sourcing |
ASIO-4056SO | ![]() |
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Power Relay | 8 | (4) Form A/(4) Form C; 5A @ 250 VAC, 5A @ 30 VDC | ASIO-4069 | ![]() |
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Available Ethernet A-Series Modules
A plethora of A-Series I/O Ethernet capable modules are available - digital, analog and special purpose modules:
Type | Number of Points | Rated Current/Point | Catalog Number | Data Sheet | Store |
Dual-Port ModbusTCP Modules | TOP | ||||
Digital Input | 16 | 10~30 VDC, 3kHz counters | AEIO-6251 | ![]() |
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Digital In/Out | 8 In / 7 Out | Inputs: 10~30 VDC, 3kHz countersOutputs: 10~30 VDC Sink, 100mA/pt max | AEIO-6250 | ![]() |
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Digital In/Power Relay | 4 In / 4 Out | Inputs: 10~30 VDC, 3kHz countersOutputs: 4 Form C, 250VAC@5A, 30VDC@5A | AEIO-6266 | ![]() |
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Digital Output | 16 | 10~30 VDC Sink, 100mA/pt max | AEIO-6256 | ![]() |
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Power Relay | 6 | (5) Form C / (1) Form A 250VAC@5A, 30VDC@5A |
AEIO-6260 | ![]() |
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Analog Input | 8 | +/-(150mV,500mV,1V,5V,10V) 0-20mA, 4-20mA, +/-20mA |
AEIO-6217 | ![]() |
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Analog Output | 4 AI / 4 DI | 0-5,0-10,-10,+/-5,+/-10V 0-20, 4-20mA; 4 Dry Contact Inputs |
AEIO-6224 | ![]() |
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ModbusTCP Modules | TOP | ||||
Digital In/Out | 12/6 | Inputs: 10~30 VDCOutputs: 10~30 VDC Sink, 100mA/pt max | AEIO-6050 | ![]() |
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Digital In/Ctr/Out | 12/2/2 | Inputs: 10~30 VDC Counters: 3kHzOutputs: 10~35 VDC Sink, 1A/pt max, 5kHz pulse | AEIO-6051 | ![]() |
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Digital In/Out | 8/8 | Inputs: 10~30 VDC, 3kHz countersOutputs: 10~30 VDC Source, 100mA/pt max | AEIO-6052 | ![]() |
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Digital In/Relay | 6/6 | Inputs: 10~30 VDC, 3kHz countersOutputs: Form A 120VAC@0.5A, 30VDC@1A; 5kHz pulse | AEIO-6060 | ![]() |
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Digital In/Power Relay | 6/6 | Inputs: 10~30 VDC, 3kHz countersOutputs: Form C 250VAC@5A, 30VDC@3A | AEIO-6066 | ![]() |
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RTD | 7 | Pt 100/1000, Ni 50, 508, Balco | AEIO-6015 | ![]() |
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Analog Input | 8 | +/-(150mV,500mV,1V,5V,10V)0-20mA, 4-20mA, +/-20mA | AEIO-6017 | ![]() |
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Thermocouple | 8 | Type J, K, T, E, R, S, BOutputs: 10~30VDC, 100mA max | AEIO-6018+ | ![]() |
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Universal | 12 | 6 AI, 2 AO, 2 DI, 2 DO | AEIO-6024 | ![]() |
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EthernetIP Modules | TOP | ||||
Digital Input | 16 | 10~30 VDC | AEIO-6151EI | ![]() |
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Digital In/Out | 8 In / 7 Out | Inputs: 10~30 VDCOutputs: 8~35VDC, 100mA max | AEIO-6150EI | ![]() |
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Digital Output | 16 | 8~35VDC, 100mA max | AEIO-6156EI | ![]() |
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Power Relay | 6 | (5) Form C / (1) Form A 250VAC@5A, 30VDC@5A |
AEIO-6160EI | ![]() |
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Analog Input | 8 | +/-(150mV,500mV,1V,5V,10V)0-20mA, 4-20mA, +/-20mA | AEIO-6117EI | ![]() |
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A-Series Media Converters
Type | Type of Ports | Catalog Number | Data Sheet | Store |
Media Converter Modules | TOP | |||
Isolated, Ext Temp | ASIO-4520I | ![]() |
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Downloads
Individual module data sheets can be obtained from the Modules tabs. The links below are general specification documents and manuals for the drivers used to connect SoftPLC controllers to A-Series I/O.
- A-Series Module Dimensions/Mounting Mounting dimensions and options for A-Series I/O and communication modules.
- Modbus Serial Master Driver Manual for SoftPLC Configuration and troubleshooting information for the high performance Modbus Serial Master driver for SoftPLC. The COMGENIUS loadable instructions can be also used for simple Modbus Master requirements.
- ModbusTCP Master Driver Manual for SoftPLC SoftPLC's ModbusTCP Master Driver can be used with A-Series modules I/O that support ModbusTCP (Models AEIO-60xx, AEIO-62xx).
- Ethernet/IP Driver Manual for SoftPLC SoftPLC's Ethernet/IP driver can be used with A-Series modules I/O that support Ethernet/IP (Models AEIO-61xxEI).
- SoftPLC A-Series Driver Manual SoftPLC drivers for serial RS-485 non-Modbus compatible A-Series modules (Models ASIO-4xxx).