DL405
Frequently Asked QuestionsDL405
Frequently Asked QuestionsProduct Selected: DL405
Category Selected: CPU & Programming
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| Question: How do I reset my processor back to factory defaults? |
| Answer: Resetting the processor to factory defaults is a two step process. First clear the processor memory by PLC>CLEAR PLC MEMORY. Next initialize the scratchpad by PLC>SETUP>INITIALIZE SCRATCHPAD. Be aware that initializing the scratchpad will reset the system V-memory to defaults. System V-memory contains parameters such as retentive ranges, DV-1000 setup parameters, etc. |
| FAQ ID: 131 |
| Question: Which DL405 CPUs support Manual Addressing capabilities in local and local expansion bases? |
| Answer: The D4-440 and D4-450 CPUs. The D4-430 is Automatic Addressing only in the local and the local expansion bases. |
| FAQ ID: 134 |
| Question: What is the accuracy of the PLC real-time clock? |
| Answer: D4-430: No clock/calendar feature D4-440: +/- 1 minute per month D4-450: +/- 1 minute per month |
| FAQ ID: 137 |
| Question: How often should I change the backup battery? |
| Answer: All of the units have an indicator that flashes when the battery is getting low. The typical life of the battery in these units is 5 years, but the battery should be checked every six months. |
| FAQ ID: 142 |
| Question: How would we check this PLC to make sure that it is calibrated? |
| Answer: Our PLCs do not require calibration. |
| FAQ ID: 144 |
| Question: Is there an "equal to" command for the D4-430 CPU? |
| Answer: Yes: F7 contacts, comparative, equal to. |
| FAQ ID: 148 |
| Question: Are the comm port settings and retentive memory settings stored on the memory cartridge? |
| Answer: Yes. |
| FAQ ID: 149 |
| Question: Can you power up and program a DL405 CPU while disconnected from the backplane? |
| Answer: Yes. |
| FAQ ID: 150 |
| Question: Does the D4-450 UV prom need the D4-HPP to code? |
| Answer: Yes it does since it uses an AUX function. |
| FAQ ID: 151 |
| Question: Is there a 24vdc-powered EBC for 405 series? |
| Answer: No, only 110/220VAC. Only expansion modules and D4-440 and D4-450 CPU’s are designed in the 24vdc market. |
| FAQ ID: 155 |
| Question: Is there a CPU that can handle a square root? |
| Answer: The D4-450 can. |
| FAQ ID: 396 |
| Question: Will any port on the D4-450 work for firmware upgrade? |
| Answer: Only port one. |
| FAQ ID: 397 |
| Question: I forgot my password, what are my options? |
| Answer: Once you have contacted Tech Support, someone will request that you send in your CPU to his or her attention. The program inside the CPU will be lost and irretrievable when we clear the password. If possible, save your program before sending in your unit. |
| FAQ ID: 402 |
| Question: Where can I obtain the most current firmware for my CPU? |
| Answer: Go to the following links on our website to check for availability of firmware. Technical Support / Firmware Upgrades / Firmware Only. |
| FAQ ID: 403 |
| Question: Can the DL 405 system be mounted vertical? |
| Answer: No. The base must be mounted horizontally to provide proper ventilation. |
| FAQ ID: 471 |
| Question: Using the D4-450, do timers self reset if left timing? |
| Answer: No, they go to a max value and stop. |
| FAQ ID: 705 |
| Question: Q: What is agency approvals on D4-450? |
| Answer: A: UL, CUL, CE. |
| FAQ ID: 791 |
| Question: I tried everything to establish communications between my PC and the CPU with no luck. I do have the power LED on and I am powering the processor with 120 VAC. I have confirmed I have the correct communications cable and the latest DirectSOFT32 programming software. What else can I check? |
| Answer: If you are powering the processor power supply with 120 VAC, make sure you have installed the shorting link on the bottom two terminals for 100-120 VAC operation. Clich here for the Directsoft Troubleshooting manual. |
| FAQ ID: 934 |
| Question: Can I change the backup battery with power applied to my DL405 CPU? |
| Answer: Yes. Open the front cover of the CPU and replace the battery. |
| FAQ ID: 1204 |