AH500 Module Manual
3-2
3.1 Overview
An analog output module receives four/eight pieces of 16-bit digital data from a CPU module. The
digital data is converted into analog signals (voltages or currents). The analog signals are sent by
the four/eight channels on the analog output module.
3.1.1 Characteristics
(1) A module is selected according to practical application.
AH04DA-5A: There are four channels. Outputs sent by a channel can be either voltages or
currents.
AH08DA-5A: There are eight channels. Outputs sent by a channel can be either voltages or
currents.
AH08DA-5B: There are eight channels. Outputs sent by these channels are voltages.
AH08DA-5C: There are eight channels. Outputs sent by these channels are currents.
(2) High-speed conversion
A digital signal is converted into an analog signal at a speed of 150 μs a channel.
(3) High accuracy
Conversion accuracy: The error is ±0.02% of an output voltage, and ±0.06% of an output current.
(The ambient temperature is 25°C. The number of output
voltages/currents which are averaged is 100.)
(4) A scale range can be set by means of software.
Users can set a scale range in ISPSoft. A scale range is a range of digital values corresponding
to a range of analog values.
(5) A module can be set by means of utility software.
HWCONFIG is built-in utility software in ISPSoft. Users can set modes and parameters in
HWCONFIG to complete hardware configuration without spending time writing a program to set
registers corresponding to functions.
3.2 Specifications and Functions
3.2.1 Specifications
Electrical specifications
Module name AH04DA-5A AH08DA-5A AH08DA-5B AH08DA-5C
Number of outputs
4 8 8 8
Analog-to-digital
conversion
Voltage output/
Current output
Voltage output/
Current output
Voltage output Current output
Supply voltage
24 V DC (20.4 V DC~28.8 V DC) (-15%~+20%)
Connector type
Removable terminal block
Conversion time
150 μs/channel
Isolation
An analog circuit is isolated from a digital circuit by a digital integrated
circuit/an optocoupler, but the analog channels are not isolated from
one another.
Isolation between a digital circuit and the ground: 500 V DC
Isolation between an analog circuit and the ground: 500 V DC
Isolation between an analog circuit and a digital circuit: 500 V DC
Isolation between the 24 V DC and the ground: 500 V DC
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