Pepper Computer RS485, RS232 user manual PT100PT100

SMART I/O User’s Manual Chapter 5 Analog Modules

Connection

		PT100		PT100
CUR0	IN0+	IN0-	AGND	IN2+	IN2-	CUR2

CUR1 IN1+

IN1-

AGND

IN3+ IN3- CUR3

PT100PT100

Input Circuit

Cur0

- 5V 68 k

10 M

In0+

+12V

MUX 8:1

AD508F

-12V

47 k + 5V

+12V

MUX 8:1

AD508F

-12V

+12V

-5V	+5V
OP213
1/2	-5V 10 k

+5V

-5V

OP213

+5V

Exit

Cur

ADC

AD 7711

In0-			MUX 8:1
			AD508F
	10 M		-12V
- 5V	47 k	68 k	+ 5V
AGND

1/2

10 k

-5V+5V

-5V

Page 5 - 34 ©1996 PEP Modular Computers GmbH March 12, 1996