CIE-M10 User’s Manual Ver. 1.1
Sollae Systems Co., Ltd.
- 9 -
http://www. eztcp.com
ADC converts the input voltage of the ADC_IN0 (0V~ADVREF) to 0~1023 digital value.
User can read this value through Modbus/TCP and HTTP. User can read the ADC value from the
address of (Digital Input Port A 4) with Modbus/TCP. When user read the ADC value with
a web browser, user can read this value with $a0 variable.
3.2.4
Digital Input Port
CIE-M10‟s digital input ports can be applied variously with circuit configuration – for example:
voltage input and Dry-Contact.
•
Voltage Input Circuit
This circuit is to get a voltage from between the two input ports. If the voltage is high the value
is 1, and if the voltage is low the value is 0.
The following is a circuit example with photo-coupler which isolates circuits electrically.
Figure 3-2 Voltage Input Interface Circuit
The [EXTERNAL INPUT 1] and [EXTERNAL INPUT 2] ports are user interface port. The working
voltage is concluded by the photo-coupler and resistors.
•
Dry-Contact Circuit
This circuit is to get a signal from mechanical switches or relays which provide just a mechanical
contact. This circuit requires an additional DC power supplier which is isolated with CIE-M10‟s
input power.
1K( 1/4W)
INPUT_1
CIE_M10_DI
3.3V
INPUT_2
1K( 1/4W)
1
2
