User`s manual

345
CHAPTER 15 SWITCHING THE MODE AFTER STARTING
15
CHAPTER 15 SWITCHING THE MODE AFTER
STARTING
This function forcefully switches the current communication protocol and transmission specifications of the designated
interface from an external device and the programmable controller CPU after the Q series C24 starts.
When the Q series C24 starts, it begins operation with the setting values of the GX Developer switch setting.
The mode switching function is used to change the communication protocol of the specified interface and transmission
specifications and continue data communications without restarting the QCPU. (When using the dedicated instruction (UINI
instruction) for mode switching, refer to Page 402, Section 17.8.)
(1) Mode switching from external device
(a) If the communication protocol of the interface connecting the external device is MC
protocol, mode switching can be performed.
(b) The communication protocol can be changed from the MC protocol as shown below.
(c) The transmission specifications set by the GX Developer switch setting can be
changed.
(Format switching)
GX Developer connection
Non procedure protocol
Bidirectional protocol
MC protocol
(Formats 1 to 5)
Pre-defined protocol