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Interface description – Siemens TC35 User Manual

Page 14

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12

Interface description

Purpose of the connectors/connections

Use and operation
The power supply is implemented by the
+- and the GND wire. To switch the TC35
Terminal on, proceed as follows:

– Either activate the DTR control line via the

RS232 interface

– Or connect IGT_IN to +. This connection

has already been set up in the specified
plug-in power supply unit below, see
"Connectible plug-in power supply unit" on
page14.

Signal
name

PIN I/O

Description

Parameters

+

1

I

Positive supply voltage
connection

+ 8 V . . . + 3 0 V
max. 33V for
1min

2

Free

PD_IN

3

I

Reset input
high active

U

IH

> + 5 V

(>3.5s)
U

IL

< + 2 V

IGT_IN

4

I

Ignition input
high active

U

IH

> +5V

(>200ms)
U

IL

< + 2 V

5

Free

GND

6

I

Negative supply voltage
connection
Reference potential for
PD_IN and IGT_IN

0 V