Grounding treatment: The FG terminal needs to be grounded separately to avoid sharing with high current grounding, and the grounding resistance should be ≤ 100 Ω.
(2) I/O and transmission wiring
I/O wiring: Use shielded wires to avoid laying them in the same conduit as power lines, and separate the wiring of analog and digital signals.
Transmission wiring: Different communication protocols correspond to different cable types (such as CP-215 using twisted pair), and matching resistors need to be installed at the terminals. The transmission distance must comply with specifications (such as a maximum of 170m at 4Mbps).
3. Hot plugging process
Support live replacement of some modules. The process is: set the BUS switch to HALT → confirm that the RMV LED is on → remove the module → install the new module in HALT mode → tighten the screws → switch the BUS switch to ACT → confirm that the RUN LED is on.

Operation and running process
1. Operation mode
Online operation mode: Execute user programs and I/O operations, RDY and RUN LEDs light up, ALM and ERR LEDs turn off when there are no faults.
Offline stop mode: Program stops, output reset, RUN or RDY LED off, trigger scenarios include no scan time set, program memory not initialized, serious faults, etc.
2. Start the process
Module installation and battery connection (CPU battery needs to be connected separately).
CPU memory initialization (set through DIP switch).
Connect the CP-717 programming tool.
Load the user program.
Start running and perform self diagnosis (including memory, ROM, CPU function diagnosis).
3. Power interruption handling
Instantaneous interruption (≤ 10ms): The device continues to operate.
Short term interruption (10ms Ns): After resetting in continuous startup mode, it continues to run. In new startup mode, it performs self diagnosis and restarts.
Long term interrupt (≥ Ns): After resetting, start according to the set mode.
Fault diagnosis and maintenance
1. Fault diagnosis method
LED indicator light: Determine the fault type based on the on/off/flashing status of RDY, RUN, ALM, ERR, BAT ALM and other LEDs (such as ERR flashing twice as RAM error).
System registers: Query fault details through registers such as SW00040 (CPU status), SW00041 (error message), SW00200 (I/O error count), etc.
Fault classification: serious fault (program stopped), alarm (program continues, ALM LED on).
2. Common fault handling
Power supply error: Check the voltage range, wiring, and terminal screws.
Communication error: Check wiring, terminal resistance, and protocol settings.
Program error: Use CP-717 to troubleshoot program logic and register addresses.
Battery alarm: When BAT ALM lights up, replace the lithium battery (ER6VC) and backup data before replacement.
3. Key points of daily maintenance
Regular inspection: tighten screws, clean modules, and check wiring integrity.
Battery maintenance: Replace the battery in a timely manner before its lifespan expires to avoid data loss.
Module replacement: Non hot swappable modules need to be powered off for replacement, and configuration consistency needs to be confirmed after replacement.
User Program Design
1. Drawing (DWG) type
Including DWG. A (startup drawing), DWG. I (interrupt handling drawing), DWG. H (high-speed scanning drawing), DWG. L (low-speed scanning drawing), supporting hierarchical calling.
Up to 64 drawings, with a maximum of 500 steps per drawing, supporting sub drawing and sub drawing extensions.
2. Function design
System standard functions: 11 preset functions (such as TRACE data tracking, FTRC-RD fault reading).
User defined functions: up to 500, supporting input/output parameter definitions, and can be called across drawings.
3. Symbol and Register Management
Supports direct register number specification or symbol specification (up to 8 characters), with symbols that can be linked upwards (parent symbol referenced by child image).
Automatic register allocation: Some registers support automatic numbering, simplifying the programming process.

Email:wang@kongjiangauto.com