Communication; Integration In Simatic S7-1200; General Information - Siemens SIWAREX WP241 Manual

Communication

11.1

Integration in SIMATIC S7-1200

11.1.1

General information

A SIWAREX WP241 occupies 32 bytes each in the I/O areas of the CPU. The maximum
number of SIWAREX WP241 weighing modules is defined as follows:
S7-1212 CPU → up to two WP241 weighing modules
S7-1214 CPU → up to eight WP241 weighing modules
S7-1215 CPU → up to eight WP241 weighing modules
S7-1217 CPU → up to eight WP241 weighing modules
Additionally observe the memory requirements for the respective function block calls.
Table 11- 1
Read weight and status
Send commands
Send parameters
Main memory requirements in CPU
Load memory requirements in CPU
n = number of WP241 modules
The function block described above including HMI configuring can be downloaded as a
predefined example project ("Ready-for-use") from the Siemens Customer Support.
The latest firmware version for the weighing module can also be downloaded from the
Customer Support.
SIWAREX WP241
Manual, 04/2014, A5E33713528A
Memory requirements of the function block
FB with DS communication
(FB241 "WP241PR")
YES
YES
YES
16 000 byte + n x 2 020 byte
202 000 byte + n x 53 000 byte
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