Siemens CP 243-1 IT, Техническое руководство

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Programming 03/03
CP 243-1 IT
J31069-D0429-U001-A0-7618
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5.2 ETHx_CFG
Calling the subprogram ETHx_CFG causes the CP 243-1 IT to read in the configu-
ration data which are stored in the memory of the S7-200 CPU. The CP 243-1 IT
then automatically performs a reset after the subprogram ETHx_CFG is called. The
configuration read from the memory of the S7-200 CPU takes effect after the re-
start following the reset.
You will need this subprogram if you want to reconfigure a CP 243-1 IT dynami-
cally from this program while your S7-200 user program is running. This program is
only created by the Internet wizard on STEP 7 Micro/WIN 32 when the CRC rou-
tine is not activated there for your configuration. When the subprogram ETHx_CFG
is called, the CP 243-1 IT terminates all existing connections and performs a reset.
As soon as the CRC routine is activated, however, you can no longer change the
configuration from a user program. This is then only possible via the Internet wiz-
ard in STEP 7 Micro/WIN 32.
Call:
ETHx_CFG
START
EN
Always_On
DONE
Done
START_BIT
ERR
Error
Fig. 10 Call of the subprogram ETHx_CFG
Input parameters:
Name Type Meaning
START BOOL Input conditions for triggering a new configura-
tion
0:
Don't trigger new configuration
1: Trigger new configuration
Table 19 Input parameters (ETHx_CFG)