Using The Modem Expansion Wizard To Configure The Modem Module - Siemens SIMATIC S7-200 System Manual

S7-200 Programmable Controller System Manual
Status LEDs of the Modem Module
The Modem module has 8 status LEDs on the front panel. Table 10-5 describes the status LEDs.
Table 10-5 EM 241 Status LEDs
LED
MF
MG
OH
NT
RI
CD
Rx
Tx
Using the Modem Expansion Wizard to Configure the Modem
Module
Start the Modem Expansion wizard from the STEP 7--Micro/WIN Tools menu or from the Tools
portion of the Navigation Bar.
To use this wizard, the project must be compiled and set to Symbolic Addressing Mode. If you
Modem
have not already compiled your program, compile it now.
Expansion
1. On first screen of the Modem Expansion wizard, select Configure an EM 241 Modem
module and click Next>.
2. The Modem Expansion wizard requires the Modem module's position relative to the S7-200
CPU in order to generate the correct program code. Click the Read Modules button to
automatically read the positions of the intelligent modules attached to the CPU. Expansion
modules are numbered sequentially starting at zero. Double-click the Modem module that
you want to configure, or set the Module Position field to the position of the Modem module.
Click Next>.
For an S7-200 CPU with firmware prior to version 1.2, you must install the intelligent module
next to the CPU in order for the Modem Expansion wizard to configure the module.
3. The password protection screen allows you to enable password protection for the Modem
module and assign a 1 to 8 character password for the module. This password is
independent of the S7-200 CPU password. When the module is password-protected,
anyone who attempts to connect with the S7-200 CPU through the Modem module is
required to supply the correct password. Select password protection if desired, and enter a
password. Click Next>.
314
Module Fail - - This LED is on when the module detects a fault condition such as:
No 24 VDC external power
S
Timeout of the I/O watchdog
S
Modem failure
S
Communications error with the local CPU
S
Module Good - - This LED is on when there is no module fault condition. The Module Good
LED flashes if there is a error in the configuration table, or the user has selected an illegal
country setting for the telephone line interface. Check the PLC Information screen in
STEP 7- -Micro/WIN or read the value in SMW220 (for module slot 0) for information about the
configuration error.
Off Hook - - This LED is on when the EM 241 is actively using the telephone line.
No Dial Tone - - This LED indicates an error condition and turns on when the EM 241 has
been commanded to send a message and there is no dial tone on the telephone line. This is
only an error condition if the EM 241 has been configured to check for a dial tone before
dialing. The LED remains on for approximately 5 seconds after a failed dial attempt.
Ring Indicator - -This LED indicates that the EM 241 is receiving an incoming call.
Carrier Detect - - This LED indicates that a connection has been established with a remote
modem.
Receive Data - - This LED flashes on when the modem is receiving data.
Transmit Data - - This LED flashes on when the modem is transmitting data.
Description