DL405 Frequently Asked Questions
DL405 Frequently Asked Questions
Product 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:
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.Note that only the retentive memory "ranges" are saved, not values in retentive memory. If you have V0-V6000 as your retentive range settings, THAT is what is saved, not the actual values in V0 thru V6000 (there is no way to save the retentive values to the cartridge). |
| 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: If the password is lost or forgotten, you will have to return the PLC to AutomationDirect, to get the password cleared. The CPU contents will be erased when we clear the password, there is not a way to retrieve the project. Contact Tech Support to get a Equipment Evaluation form to fill out and return with your PLC. Once AutomationDirect has the signed form and PLC, we can clear the PLC and return it back to you. AutomationDirect can only perform the password clear if the PLC is being shipped back to a United States address, we cannot ship the PLC outside of the US. |
| FAQ ID: 402 |
| Question: Where can I obtain the most current firmware for my CPU? |
| Answer: Go to Software & Firmware Downloads to check for the latest firmware file. |
| 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 |
| Question: How do I use a variable as a timer preset? |
| Answer: In your timer box where you are currently typing 'Kxxx' for the preset you would put a V memory address such as V2000. Make sure that this address is only used for this purpose. Now open a data view and type in V2000. You would use this same V memory address for every timer that you want to have the same value. Click the yellow E button with the red circle and slash in the upper left of the data view window to enable edits. Now you should have a column titled edits on the right of the V2000 you typed in. Enter your value in this column next to V2000 and press the middle of the three buttons at the top right of the data view. Please note that you can use other V memory addresses than V2000. The full list of available addresses is available in the PLC -> Memory map menu item. Also you can find the list of available memory in Chapter 3 (or 4 depending on the PLC model) of the User manual. |
| FAQ ID: 1340 |
| Question: How do I determine if my 405 specialty modules are compatible with with my 450 CPU? |
| Answer: Check the link below: https://sid.automationdirect.com/techdb/advisories/uploads/pad4-005.pdf |
| FAQ ID: 1440 |