Siemens S7-200 - Page 126

Operating Your Text Display (TD) Device
5.7 Performing Specialized Operator Tasks (Diagnostic/Setup Menu)
Text Display (TD) User Manual
126 System Manual, 08/2008, A5E00765548-03
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Figure 5-18 TD setup menu for the TD400C
● Setting the baud rate for the TD device: choose the baud rate for the TD device. You can
choose either 9.6 kbaud (9600 baud), 19.2 kbaud, or 187.5 kbaud.
Use the UP or DOWN arrow to select the baud rate. The baud rate must match the baud
rate of the S7-200 CPU and any other device on the same network.
● Setting the Highest Station: Changes the highest station address for the TD device. This
setting tells the TD device which network addresses to check when looking for other
network master devices. The default highest station address is 31. This means that the
TD device checks addresses 0 through 31 when looking for other network masters. This
setting should only be changed when there are more than 32 master devices on the
network.
Use the UP and DOWN arrows to select the highest address on the network
(default = 31).
● Setting the Gap Factor: Changes the Gap Factor for the TD device. This setting tells the
TD device how often to check for other network master devices. The default setting of 10
causes the TD device to check once every 10 messages. A setting of 1 would cause the
TD device to check for other masters after every message.
Use the UP and DOWN arrows to select the gap factor between stations (default = 10).
● Setting the contrast:
– TD 100C, TD 200, and TD 200C: You can optimize the display for different viewing
angles and lighting conditions by adjusting the contrast of the screen on the TD
device. The default contrast value is 40, with values ranging from 25 (lighter) to 55
(darker).
Use the UP and DOWN arrows to select the contrast setting for the display area of the
TD device (default setting = 40).