6 Interface Between CNC And PLC
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• LCD Display Function Disabled (C247)
C247 =0, LCD display disable function OFF
C247 =1, LCD display disable function ON
• User Defined Keyboard Function Output (C255)
C255 =0, User defined keyboard output function OFF
C255 =0→1, User defined keyboard output function ON (see C245)
6.3 Description of PLC Register
This section describes the registers that are used in PLC for HUST H2N controller.
Table 6-4 is a summary of registers with their corresponding variable number.
1. R000~R099 are for user’s application in the PLC program.
2. R100~R255 are reserved for HUST H2N system data, NOT for customer’s use.
The data in R000 ~ R199 can be saved with power off if MCM #86=256, and
the data will NOT be saved if MCM #86=0.
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