Specifications

5PROFINET Controller ME1PN1FW-Q

wing the PROFINET Controller.

Note: if any of the intelligent modules requires specific settings in the 'I/O Assignment' configuration,

these settings must first be set in the controlling Qn-CPU using the PLC programming software (GX

Developer, GX IEC Developer, GX Works 2). After this the I/O assignment settings must be copied to

the PROFINET Controller by updating the PROFINET Controller using the 'Update Parameters' dia-

log. Otherwise the Qn-CPU will signal an error, because the I/O assignment settings on Qn-CPU

and PROFINET Controller differ. When using GX Works 2 to set up the controlling QnU-CPU the pa-

rameters must not be necessarily be downloaded to the CPU module. If the PLC project path is set

in the 'Update Parameters' dialog the I/O assignment information is taken from there instead of

uploading them from the module.

2.1 Shared Memory PLC Interface

The communication between the PLC program and the PROFINET Controller is based on a shared

memory area (inside the High Speed Area), which is accessed via buffer devices in the CPU (PLC).

The memory area consists of the following sections