DL305 - DL350 CPU Frequently Asked Questions
DL305 - DL350 CPU Frequently Asked Questions
Product Selected: DL305 - DL350 CPU
Category Selected: CPU & Programming
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| Question: I'm doing REAL number math and OUTing the value to a register with my D3-350. When I need that number it does not display correctly. What's wrong? |
| Answer: The REAL number PLC's use the IEEE 32 bit floating point format. You must use an OUTD to store the result of a REAL number math operation into V-memory. |
| FAQ ID: 97 |
| Question: I'm upgrading my old DL305 systems to the new D3-350. How will my programs be handled? |
| Answer: The D3-330 and D3-340 use the old 305 instruction set. This is early to mid-80's technology. The new D3-350 uses the new 205/405 memory mapping and instruction set. Unfortunately the only way to convert is to rewrite the program. PLC Direct technical support does not offer this service but we can refer you to integrators who can rewrite your code if you do not wish to do it yourself. |
| FAQ ID: 99 |
| Question: Can you use an OP-CCBL to program a D3-350 CPU? |
| Answer: No...6;2-1 are jumpered together. |
| FAQ ID: 121 |
| Question: Can I force I/O points in the D3-350? |
| Answer: I/O points in the D3-350 firmware version 1.15 or newer can be "forced" using bit override. |
| FAQ ID: 124 |
| Question: What modules does the D3-350 not support? |
| Answer: D3-HSC, D3-232-DCU, D3-422-DCU, D3-HP, D3-HPP, F3-AB64, F3-AB64-R, F3-AB64-T, F3-AB128, F3-AB128-R, F3-AB128-T |
| FAQ ID: 352 |
| 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: 395 |
| 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: 1341 |