User Manual

Siemens Building Technologies VISONIK DCS Functions and System Messages VVS18 CM2U8567E / 04.1999
Landis & Staefa Division Function KER 2-161
2.17 KER KERMIT Protocol
To transfer ASCII files between two computer systems a standard transmission protocol
is necessary. This means that the computers involved must be able to communicate in a
standard understandable "language". This is not always easy because of different
Operating Systems.
For this reason KERMIT was developed for American universities to meet the
requirements of the most widely-used Operating Systems. This program provides a
uniform transmission protocol between different computer systems and is known as
"KERMIT Protocol".
If a PC is connected to VISONIK DCS through a V.24 interface as a partner system and
it is required to transfer user files in ASCII format between these two systems, then
KERMIT must be installed in both systems.
In VISONIK DCS this is the "KER" function and is only used in conjunction with other
partner computer systems (e.g. PC).
The KERMIT program has a SERVER mode which "serves" the relative partner system
only when it receives concrete instructions from the partner's KERMIT program.
The KER function in VISONIK DCS has only two SERVER modes i.e. files may be
transferred to or from the host VISONIK DCS under control from the partner PC only.
For such transfers the following procedure must be carried out at the PC:
1. Start PC "KERMIT" program.
2. Establish Transparent Mode with VISONIK DCS.
3. Start VISONIK DCS "KERMIT" program (SERVER).
4. Terminate Transparent Mode with VISONIK DCS
5. Transfer files
6. Stop both KERMIT programs
2.17.1 Start PC "KERMIT" Program
KERMIT is started at the PC using an instruction set specific to the PC type involved
and a Set-up defined to match the partner VISONIK DCS System (Baud rate, Port, etc.).
A Help menu can be called up by entering a question mark "?" after the KERMIT
prompt. All instructions for running KERMIT on the particular PC are then displayed.
C:\ >KERMIT\KERMIT
IBM-PC Kermit-MS V2.28
Type ? for help
Kermit-MS>?
BYE CLEAR CLOSE CONNECT
CWD DEFINE DELETE DIRECTORY
DO EXIT FINISH GET
HELP LOCAL LOG LOGOUT
PUSH QUIT RECEIVE REMOTE
RUN SEND SERVER SET
SHOW SPACE STATUS TAKE
TYPE VERSION
Kermit-MS>_