Wiring Diagram

Analog Voltage Pparameters

Voltage Input Range Selection Table

Voltage input range selection and code value range
Range selection	Range	Code value range	Voltage input formula	Voltage output formula
0	Disable, indicating the channel is not enabled
1 (default)	-10V~+10V	-32768~32767	D=(65535/20)*U	U=(D*20)/65535
2	0V~10V	0~32767	D=(32767/10)*U	U=(D*10)/32767
3	-10V~+10V	-27648~27648	D=(55296/20)*U	U=(D*20)/55296
4	0V~10V	0~27648	D=(27648/10)*U	U=(D*10)/27648
5	-5V~+5V	-27648~27648	D=(55296/10)*U	U=(D*10)/55296
6	0V~5V	0~27648	D=(27648/5)*U	U=(D*5)/27648
7	1V~5V	0~27648	D=(27648/4)*U-6912	U=(D+6912)*4/27648

Note: D represents the code value, and U represents the voltage. The default range for analog voltage input terminal is 1: -10V~+10V (-32768~32767).

Voltage Output Range Selection Table

Voltage output range selection and code value range
Range selection	Range	Code value range	Voltage input formula	Voltage output formula
0	Disable, indicating the channel is not enabled
1 (default)	-10V~+10V	-32768~32767	D=(65535/20)*U	U=(D*20)/65535
2	0V~10V	0~32767	D=(32767/10)*U	U=(D*10)/32767
3	-10V~+10V	-27648~27648	D=(55296/20)*U	U=(D*20)/55296
4	0V~10V	0~27648	D=(27648/10)*U	U=(D*10)/27648
5	-5V~+5V	-27648~27648	D=(55296/10)*U	U=(D*10)/55296
6	0V~5V	0~27648	D=(27648/5)*U	U=(D*5)/27648
7	1V~5V	0~27648	D=(27648/4)*U-6912	U=(D+6912)*4/27648

Note: D represents the code value, and U represents the voltage. The default range for analog voltage output terminal is 1: -10V~+10V (-32768~32767).

Voltage Input Code Value Table

Voltage	-10V~+10V	0V~10V	-10V~+10V	0V~10V
	-32768~32767	0~32767	-27648~27648	0~27648
	Code value	Code value	Code value	Code value
-10.13	-	-	-27980	-
-10	-32768	-	-27648	-
-9	-29491	-	-24883	-
-8	-26214	-	-22118	-
-7	-22937	-	-19354	-
-6	-19661	-	-16589	-
-5	-16384	-	-13824	-
-4	-13107	-	-11059	-
-3	-9830	-	-8294	-
-2	-6554	-	-5530	-
-1	-3277	-	-2765	-
-0.13	-426	-384	-359	-332
-0.06	-197	-197	-166	-156
0	0	0	0	0
1	3277	3277	2765	2765
2	6554	6554	5530	5530
3	9830	9830	8294	8294
4	13107	13107	11059	11059
5	16384	16384	13824	13824
6	19661	19661	16589	16589
7	22937	22937	19354	19354
8	26214	26214	22118	22118
9	29491	29491	24883	24883
10	32767	32767	27648	27648
10.12	-	-	27980	27980
Code value formula	Code value = ( 65535/20 ) *Voltage	Code value = ( 32767/10 ) *Voltage	Code value = ( 55296/20 ) *Voltage	Code value = ( 27648/10 ) *Voltage
Voltage formula	Voltage = ( Code value*20 )/65535	Voltage = ( Code value*10 )/32767	Voltage = ( Code value*20 )/55296	Voltage = ( Code value*10 )/27648

Note:

① When the voltage input terminal range is selected as -10V~+10V (-32768~32767), it supports overflow/ underflow functions. That is, when the channel input voltage is greater than 10V, it displays the maximum code value 32767; When the input voltage of the input channel is less than -10V, it displays the minimum code value -32768.

② When the voltage input terminal range is selected as 0V~10V (0~32767), it supports underflow overshoot, overflow/underflow, and underflow alarm functions. Overshoot means that when the channel input range exceeds the range and enters overshoot, it displays a normal calculated code value within -0.13V~+10V. Overflow/underflow means that when the channel input voltage exceeds 10V, it displays the maximum code value 32767. When the input voltage of the input channel is less than -0.13V, the module displays the minimum overshoot code value -384 and gives an alarm at the same time .

③ When the voltage input terminal range is selected as -10V~+10V ( -27648~27648), it supports overshoot, overflow/underflow, and overflow/underflow alarm functions. Overshoot means that when the channel input voltage exceeds the range and enters overshoot, the module displays a normal calculated code value within -10.13V~+10.12V. Overflow/underflow means that when the channel input voltage exceeds 10.12V, the module displays the maximum overshoot code value 27980 and gives an alarm at the same time. When the input voltage of the input channel is less than -10.13V, the module displays the minimum overshoot code value - 27980 and gives an alarm at the same time.

④ When the voltage input terminal range is selected as 0V~10V ( 0~27648), it supports overshoot, overflow/underflow, and overflow/underflow alarm functions. Overshoot means that when the channel input voltage exceeds the range and enters overshoot, the module displays a normal calculated code value within -0.13V~+10.12V. Overflow/underflow means that when the channel input voltage exceeds 10.12V, the module displays the maximum overshoot code value 27980 and gives an alarm at the same time. When the input voltage of the input channel is less than -0.13V, the module displays the minimum overshoot code value - 332 and gives an alarm at the same time.

Voltage	-5V~+5V	0V~5V	1V~5V
	-27648~27648	0~27648	0~27648
	Code value	Code value	Code value
-5.07	-27980	-	-
-5	-27648	-	-
-4	-22118	-	-
-3	-16588	-	-
-2	-11060	-	-
-1	-5530	-	-
-0.07	-332	-332	-
0	0	0	-
0.94	5198	5198	-345
1	5530	5530	0
2	11060	11060	6912
3	16588	16588	13824
4	22118	22118	20736
5	27648	27648	27648
5.06	27980	27980	27933
Code value formula	Code value =(55296/10)* Voltage	Code value =(27648/5)*Voltage	Code value =(27648/4)* Voltage -6912
Voltage formula	Voltage =( Code value *10)/55296	Voltage =( Code value *5)/27648	Voltage =( Code value +6912)*4/27648

Note:

① When the voltage input terminal range is selected as -5V~+5V (-27648~27648), it supports overshoot, overflow/underflow, and overflow/underflow alarm functions. Overshoot means that when the channel input voltage exceeds the range and enters overshoot, the module displays a normal calculated code value within -5.07V~+5.06V. Overflow/underflow means that when the channel input voltage exceeds 5.06V, the module displays the maximum overshoot code value 27980 and gives an alarm at the same time; When the input voltage of the input channel is less than -5.07V, the module displays the minimum overshoot code value -27980 and gives an alarm at the same time.

②The voltage input terminal range is selected as 0V~5V ( 0~27648), it supports overshoot, overflow/underflow, and overflow/underflow alarm functions. Overshoot means that when the channel input voltage exceeds the range, the module displays a normal calculated code value within -0.07V~+5.06V. Overflow/underflow means that when the channel input voltage exceeds 5.06V, the module displays the maximum overshoot code value 27980 and gives an alarm at the same time; When the input voltage of the input channel is less than -0.07V, the module displays the minimum overshoot code value - 332 and gives an alarm at the same time.

③The voltage input terminal range is selected as 1V~5V ( 0~27648), it supports overshoot, overflow/underflow, and overflow/underflow alarm functions. Overshoot means that when the channel input voltage exceeds the range, the module displays a normal calculated code value within 0.94V~5.06V. Overflow/underflow means that when the channel input voltage exceeds 5.06V, the module displays the maximum overshoot code value 27933 and gives an alarm at the same time. When the input voltage of the input channel is less than 0.94V, the module displays the minimum overshoot code value - 345 and gives an alarm at the same time.

Voltage Output Code Value Table

Voltage	-10V~+10V	0V~10V	-10V~+10V	0V~10V
	-32768~32767	0~32767	-27648~27648	0~27648
	Code value	Code value	Code value	Code value
-10	-32768	-	-27648	-
-9	-29491	-	-24883	-
-8	-26214	-	-22118	-
-7	-22937	-	-19354	-
-6	-19661	-	-16589	-
-5	-16384	-	-13824	-
-4	-13107	-	-11059	-
-3	-9830	-	-8294	-
-2	-6554	-	-5530	-
-1	-3277	-	-2765	-
0	0	0	0	0
1	3277	3277	2765	2765
2	6554	6554	5530	5530
3	9830	9830	8294	8294
4	13107	13107	11059	11059
5	16384	16384	13824	13824
6	19661	19661	16589	16589
7	22937	22937	19354	19354
8	26214	26214	22118	22118
9	29491	29491	24883	24883
10	32767	32767	27648	27648
Code value formula	Code value = ( 65535/20 ) *Voltage	Code value = ( 32767/10 ) *Voltage	Code value = ( 55296/20 ) *Voltage	Code value = ( 27648/10 ) *Voltage
Voltage formula	Voltage = ( Code value*20 )/65535	Voltage = ( Code value*10 )/32767	Voltage = ( Code value*20 )/55296	Voltage = ( Code value*10 )/27648

Note:

① The voltage output terminal supports overflow/underflow functions. That’s, when the voltage output terminal range is selected as -10V~+10V or 0V~10V and the code value is set to be greater than the maximum code value corresponding to the range, all channels output 10V;

When the voltage output terminal range is selected as -10V~+10V and the code value is set below the minimum code value corresponding to the range, the channel outputs -10V.

When the voltage output terminal range is selected as 0V~10V and the code value is set below the minimum code value corresponding to the range, the channel outputs 0V.

Voltage	-5V~+5V	0V~5V	1V~5V
	-27648~27648	0~27648	0~27648
	Code value	Code value	Code value
-5	-27648	-	-
-4	-22118	-	-
-3	-16588	-	-
-2	-11060	-	-
-1	-5530	-	-
0	0	0	-
1	5530	5530	0
2	11060	11060	6912
3	16588	16588	13824
4	22118	22118	20736
5	27648	27648	27648
Code value formula	Code value =(55296/10)* Voltage	Code value =(27648/5)*Voltage	Code value =(27648/4)* Voltage -6912
Voltage formula	Voltage =( Code value *10)/55296	Voltage =( Code value *5)/27648	Voltage =( Code value +6912)*4/27648

Note:

① The voltage output terminal supports overflow/underflow functions. That’s, when the voltage output terminal range is selected as -5V~+5V/0V~5V/1V~5V and the code value is set to be greater than the maximum code value corresponding to the range, all channels output 5V;

When the voltage output terminal range is selected as -5V~+5V and the code value is set below the minimum code value corresponding to the range, the channel outputs -5V.

When the voltage output terminal range is selected as 0V~5V and the code value is set below the minimum code value corresponding to the range, the channel outputs 0V.

When the voltage output terminal range is selected as 1V~5V and the code value is set below the minimum code value corresponding to the range, the channel outputs 1V.

SRR3218 | Analog 8 channel Voltage Input Module