Siemens SIMATIC NET SINAUT ST7 System Manual page 194

Installing and putting a TIM into operation
5.4 Options for attachment and settings of the TIM 3 and TIM 4 variants
Basic settings for dialing mode
Certain basic settings must be made for the dialing mode. The settings relate to the data
format, the dialing procedure, and line adjustment. You make the basic settings with the DIL
switches SW2.1, SW2.5, SW2.6 and SW2.9.
The procedure is as follows:
Turn of the power supply and set the four switches mentioned above to the required position.
When you turn on the power supply, the modem then adopts the selected basic setting.
Table 5-30
Meaning
Data format 11 bits in the data phase
(required, for example, for FT 1.2 format with ST1
and ST7)
Data format 10 bits in the data phase
(required, for example, for FT 2 format with ST1
and ST7)
Tone dialing
Pulse dialing
Line adjustment 600 ohms
Line adjustment Zr
1) When shipped, the line adjustment is set to Zr, because the MD3 is normally connected to a digital telephone exchange. If an older analog
telephone exchange is used, change the line adjustment to 600 ohms if you encounter transmission problems.
Note
For more detailed information on setting the standard dialing profile 0 of the MD3 modem,
refer to the separately available MD3 modem description 6NH7811-0AA31.
194
Basic setting for dialing mode
1)
1)
Setting on DIL switch
SINAUT ST7 Station control system - System Manual
System Manual, 05/2007, C79000-G8976-C178-06