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03/03
5
Programming
Use STEP 7 Micro/WIN 32 to develop S7-200 user programs. The version STEP 7
Micro/WIN 32 must be V3.2.3 or higher so that you can use the functions of the CP
243-1 IT in these programs.
To be able to use the CP 243-1 IT as an S7, e-mail or FTP client, at least one of
the communication channels of the CP 243-1 IT must be configured appropriately.
In addition, the user program of the S7-200 must be programmed appropriately.
The CP 243-1 IT is programmed in the S7-200 user program with the following
subprograms. The subprograms are named for the position in which a CP 243-1 IT
is located in the S7-200 system.
• ETHx_CTRL
• ETHx_CFG
• ETHx_XFR
• ETHx_EMAIL (x corresponds to the slot position, possible values: 0,1, ...6)
• ETHx_FTPC
At the end of configuration, these subprograms are generated by the Internet wiz-
ard integrated in STEP 7 Micro/WIN 32. You will find these subprograms in STEP 7
Micro/WIN 32 in the box with the operations tree under the entry "Subroutine". The
data which you entered during configuration determine which subprograms the
wizard creates at the end of the configuration.
Note
Regardless of the timeouts defined in appendix C, we urgently advise all applica-
tion programs to define a user-specific timeout time in the user program for these
functions after the S7, e-mail or FTP client jobs are started. When this time is ex-
ceeded, the job can be terminated by the "abort command" of subprograms
ETHx_XFR, ETHx_EMAIL or ETHx_FTPC.
Calls of a Web browser to the HTTP server of the CP 243-1 IT can usually be can-
celled by clicking a button in the Web browser screen.
Caution
The subprograms for programming the CP 243-1 IT may not be called from inter-
rupt routines in the S7-200 user program.
CP 243-1 IT
J31069-D0429-U001-A0-7618
(x corresponds to the slot position, possible values: 0,1, ...6)
(x corresponds to the slot position, possible values: 0,1, ...6)
(x corresponds to the slot position, possible values: 0,1, ...6)
(x corresponds to the slot position, possible values: 0,1, ...6)
Programming
95
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