User's Manual

ManualsBrandsSiemens ManualsComputer HardwareSiemens Computer Hardware AS 235

Siemens PLT 111 · 1999

4/6

I/O modules

Analog input and output modules

Signal modules

Analog input/output modules and binary input/output modules

are available as signal modules.

Analog input and output modules

The following modules are available:

• Analog input module with 8 channels and power supply for

transmitters, floating,

6DS1 701-8AB

For input of 8 analog, floating process signals (transmitter sig-

nals) for further processing in the central unit of the automation

system. The module powers 8 transmitters in a two-wire or four-

wire system.

HART-compatible transmitters can be connected to the mod-

ule without influencing the measured signal. External analog

distribution is possible in the case of current measurements.

The max. value for the load is 150

Ω.

• Analog input module with 8 channels and power supply for

transmitters, non-floating,

6DS1 730-8AA

For non-floating input of 8 analog process signals (transmitter

signals) to the central unit of an automation system. The mod-

ule powers 8 transmitters with a two-wire or four-wire system.

The input signal can be divided in the case of a current circuit

via two Z diodes per channel.

The input signals can be measured at test sockets on the front

panel.

• Basic module with 4 channels for thermocouples, resis-

tance thermometers and process signals, floating,

6DS1 731-8RR, and

measurement-point extension module with 14 channels,

6DS1 703-8RR

For direct acquisition of 4 temperatures (floating) with thermo-

couples or Pt 100 resistance thermometers. Process signals of

0 to 20 mA or 4 to 20 mA can also be connected to all 4 chan-

nels, 0 to 10 V can also be connected to channel 1.

The analog input module can be extended by 2 x 14 inputs

using measurement-point extension modules.

Linearization of the input signals and compensation of the cold

junction temperature are carried out on the module. The char-

acteristics for standard thermocouples and Pt 100 resistance

thermometers are stored in the module. Adaptation to special

thermocouples is possible by means of corresponding config-

uring.

The module has 4 free analog outputs for voltage and another

4 for current.

The analog module must be configured. The PC is connected

via the front plug of the module.

• Analog output module with 4 channels, floating,

6DS1 702-8RR

To output 4 analog signals of 0 to 20 mA or 4 to 20 mA. These

are available at the process interface for further processing by

analog instruments or systems.

The output signals can also be output as voltages of 0 to 10 V

or 2 to 10 V for loads with a very high internal impedance

(Ri > 500 k

Ω).

1) With AS 235 systems, STRUK-AS 220 EA (page 4/9) can also be used for

operations via the CS 275 plant bus (software release G and later)

Ordering data Order No.

Analog input module

• With 8 channels and power sup-

ply for transmitters, floating

– Module

1) Instruction Manual not available separately but as part of the manual

"Signal modules" C79000-G8000-C31 (German) or C79000-G8076-

C31 (English).

6DS1 701-8AB

• With 8 channels and power sup-

ply for transmitters, non-floating

– Module

6DS1 730-8AA

• Basic module with 4 channels

for thermocouples, resistance

thermometers and process sig-

nals, floating, configurable

– Module

– German Instruction Manual

– English Instruction Manual

6DS1 731-8RR

C79000-B8000-C427

C79000-B8076-C427

• Measurement-point extension

module with 14 channels

– Module

– Instruction Manual

6DS1 703-8RR

Included in Instruction Manual

of basic module

Cable

to connect the analog input

module (basic module)

– 1 extension module

– 6DS1 703-8RR

– 2 extension modules

– 6DS1 703-8RR

C79458-L442-B21

C79548-L442-B22

Analog output module

with 4 channels, floating

– Module

6DS1 702-8RR

This catalog is out of date, see note on page 1