JUMO PCA Communications Software PCC (B 70.9702.0) - Manual (Page 80)

8 Menu Functions and Toolbar
80
use a different init string.
After the software has been installed for the first time, the standard init strings
(one string per modem) will be copied and treated as “customized” strings. In
this way, any altered init strings will also be retained after a software update.
This function means that the original strings can be attached to the
“customized” ones, with the result that the modem list grows every time the
function is called up.
Interface
converter If the device uses an RS422/485 interface, then the device modem must be
connected to the device via an interface converter (Spectra, type I-7520A) that
converts RS232 to RS422/485 levels.
h Connect the device to the telephone network, via the Spectra interface
converter and the modem, as per wiring plan.
h Switch on the modem.
h Establish the new connection to the device via the modem.
v Chapter 8.2.1 "Device List"
Reset
modem This resets the modem to the factory defaults, so that it can be used as a PC
modem again.
h Select a modem init string with the addition “Reset.”
H
If a different interface converter is used, it must be equipped with an
automatic data direction sensing function.