SIEMENS
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Siemens IK PI · 2015
Industrial Remote Communication
Accessories for remote networks
PPI modem cable
7
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Overview
•
Intelligent RS 232/PPI multimaster cable for connecting
modems with RS 232 interface to SIMATIC S7-200 (RS 485)
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Benefits
•
Matching cable length for control cabinet assembly
•
No RS 232 adapter (gender changer) required for modem
connection
•
Simple fixing of cable in control cabinet using Velcro fastener
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Application
The intelligent RS 232/PPI multimaster cable can be used for the
connection between modems and the S7-200. It is then possible
to connect modems such as the GSM modem MD720-3 with
RS 232 interface to the PPI interface of the S7-200 without using
a gender changer. As a result of the short cable lengths and the
industrial Velcro fasteners, the PPI modem cable is suitable for
use in control cabinets.
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Design
•
24 V DC power supply via the RS 485 interface of the
SIMATIC S7-200
•
Three LEDs for status display:
- Tx, green: RS 232 send
- Rx, green: RS 232 receive
- PPI, green: RS 485 send
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Function
PPI mode:
•
Signal conversion from RS 232 to RS 485
•
Control of token in a multimaster PPI network (PPI master)
•
Supports 10-bit modem protocol via RS 232, and DPT and PPI
protocols via RS 485
Freeport mode:
•
Signal conversion from RS 232 to RS 485
•
Switchover between local and remote modes
•
Configuration in local mode using DIP switches
•
Configuration in remote mode using terminal program
(e.g. MS Hyper Terminal)
•
Supports AT modem commands and PIN for Siemens
modems
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Technical specifications
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Ordering data
Article No.
Article No.
6NH9701-0AD
Product-type designation
PPI modem cable
Acceptability for application
For connecting modems (MD720-3)
to S7-200
Cable length
1.1 m
Mechanical data
Net weight
0.3 kg
PPI modem cable
6NH9701-0AD
For connecting modems with
RS 232 interface to SIMATIC S7-200
© Siemens AG 2014