Mitsubishi MELSEC LJ71C24, User Manual

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6 SETTING AND WIRING
6.4.1 ROM/RAM/switch test
A ROM/RAM/switch test checks the contents of the memory of the C24 and the switch
settings set with GX Works2.
Perform a ROM/RAM/switch test with the procedure described below.
(Procedure 1) Communication protocol setting and transmission setting (refer to Section 7.3)
(1) In the switch setting, set the communication protocol setting on the CH2 side to
"ROM/RAM/Switch test".
(2) Set the communication protocol setting on the CH1 side to the number used for
data communication with an external device following the test.
(3) Set the transmission settings and communication rate settings for the two
interfaces to match the specifications used when communicating data with an
external device.
(4) Set the CPU module to STOP status and write the parameters to the CPU
module.
(Procedure 2) Performing ROM/RAM/switch test
Restart or reset the CPU module. The test starts automatically in about one second.
(Set the CPU module to the STOP status.)