User`s manual

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CHAPTER 11 DATA COMMUNICATIONS USING USER FRAMES
11
11.4 Data Transmission
11.4.3 Settings for transmission user frames
These settings are required for sending data to an external device via user frames and the non procedure protocol.
These settings are made from the GX Configurator-SC or the programmable controller CPU.
(1) Settings via GX Configurator-SC
Perform settings on the following screen to send data using user frames.
• "Non procedure system setting" screen
• "Transmission user frame No. designation system setting" screen
For setting contents on each screen, see Page 289, Section 11.4.3 (2).
(2) Settings via the programmable controller CPU
(a) How to designate and write transmission data when transmitting via user frames
For arbitrary data section when sending a combination of user frames and arbitrary data section, the
transmission data count and transmission data are written in the transmission area (the same as when sending
them in an arbitrary format.)
User frames are registered using the GX Configurator-SC. Or, the user frame registration number to be sent is
written from the programmable controller CPU to the transmission user frame designation area of the buffer
memory as shown in the diagram below.
After executing registration/write, the Q series C24 transmits the designated data in the designated order upon
execution of the PRR instruction.