Using A 10-Bit Modem To Connect An S7-200 Cpu To A Step 7-Micro/Win 32 Master; S7-200 Data Communications Using A 10-Bit Modem With A 5-Switch Pc/Ppi Cable - Siemens SIMATIC S7-200 System Manual

Using a 10-Bit Modem to Connect an S7-200 CPU to a STEP 7-Micro/WIN 32
Master
Using STEP 7-Micro/WIN 32 on a PC with a Windows 95, Windows 98, or
Windows NT operating system, or using a SIMATIC programming device (such as
a PG 740) as a single-master device, you can connect to only one S7-200 CPU.
You can use a Hayes-compatible 10-bit modem to communicate to a single remote
S7-200 CPU. Figure 7-17 shows S7-200 data communications using a 10-bit
modem with a 5-switch PC/PPI cable.
You will need the following equipment:
A single S7-200 CPU as a slave device. The CPU 221, CPU 222, CPU 224,
and CPU 226 support the 10-bit format. Previous S7-200 CPUs do not support
the 10-bit format.
An RS-232 cable to connect the PC or SIMATIC programming device to a
full-duplex,10-bit local modem
A 5-switch PC/PPI cable (set to the proper baud rate, 10-bit data
communications mode, and DTE mode) to connect the remote modem to the
CPU
An optional 9-pin to 25-pin adapter (if your modem connector requires it)
Note
The 4-switch PC/PPI cable does not support the 10-bit format.
RS-232
COMx
PG/
PC
RS-232
Master
Note: x = your port number
Figure 7-17

S7-200 Data Communications Using a 10-Bit Modem with a 5-Switch PC/PPI Cable

S7-200 Programmable Controller System Manual
A5E00066097-02
Setting Up Communications Hardware and Network Communications
25-pin to 9-pin
Telephone line
Full-duplex Full-duplex
10-bit
modem
modem
Local Remote
Adapter
PC/PPI cable
10-bit
RS-232
5-Switch
Slave
CPU 224
RS-485
7-23