DV-1000 Frequently Asked Questions
DV-1000 Frequently Asked Questions
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| Question: Will the DV-1000 panel work with the DL05? |
| Answer: The DV-1000 connected to Communication Port 1 of the DL05 will function the same as it does with the DL-205 family. |
| FAQ ID: 3 |
| Question: Can I use the DV-1000 with a Series-105 PLC? |
| Answer: Yes, the Series-105 CPUs are treated just like the 230 CPU in the Series-205. The DV-1000 manual does not mention the 105 CPUs because at the time the manual was written there were no Series-105 CPUs. |
| FAQ ID: 196 |
| Question: Can I use the DV-1000 to change data in the PLC? |
| Answer: Yes. There are two modes available for changing PLC data: 1) Change Preset Mode lets you individually edit V-memory locations as a 4-digit BCD number, from a list of either 16 or 32 data word locations, and up to 99 timer presets and 99 counter presets (depending on CPU type). 2) Bit Control Mode dedicates 8 of the 10 keys on the keypad for single-bit control. These operate as eight momentary, normally off pushbuttons. |
| FAQ ID: 197 |
| Question: Is there password protection for modes that allow the operator to change PLC data? |
| Answer: Yes, there is for Change Preset Mode. See Chapter 6 in the DV-1000 for more on this topic. |
| FAQ ID: 198 |
| Question: How many DV-1000s can be connected to the PLC? |
| Answer: A maximum of two DV-1000s may be directly connected to the DL240 CPU. See Chapter 2 in the DV-1000 Manual for other options, and general information on this topic. |
| FAQ ID: 199 |
| Question: Can the PLC cause the DV-1000 to always power up in a certain mode? |
| Answer: Yes. The powerup default mode may be selected by using a particular entry in the parameter setup table. See Chapter 3 in the DV-1000 Manual for more on this topic. |
| FAQ ID: 200 |
| Question: Is there a way to cause the DV-1000 to stay in Bit Control Mode (or any mode that I choose)? |
| Answer: You can set up the DV-1000 to power up in particular modes. However, if the operator presses certain keys on the keypad, this takes the DV-1000 out of its original powerup mode. |
| FAQ ID: 201 |
| Question: Can the PLC cause the DV-1000 to change modes during normal operation PLC run mode)? |
| Answer: No. After establishing the powerup mode, further DV-1000 mode changes only occur upon keypad entry. |
| FAQ ID: 202 |
| Question: When does the DV-1000 read its setup parameters from the PLC? |
| Answer: These are read one time just after powerup, and any time a mode change is requested from the keypad. |
| FAQ ID: 203 |
| Question: What's the best way to enter setup parameters? |
| Answer: We recommend imbedding the setup as a part of the ladder program. Using a SP0 contact on the rung, it only executes on the first PLC scan. See Chapter 3 in the DV-1000 Manual for more on setup parameters. |
| FAQ ID: 204 |
| Question: I need to display the phrase "TEMP 1", followed by the present value of the temperature in PLC V-memory, and also to allow changing that value right on the display. Is there a way to do this? |
| Answer: Yes. Use Change Preset Mode, with user-titled labels. |
| FAQ ID: 205 |
| Question: Can I use the DV-1000 to change timer or counter presets in the PLC? |
| Answer: Yes. The Change Preset Mode will let you do this. See Chapter 6 in the DV-1000 Manual for more information on this topic. |
| FAQ ID: 206 |
| Question: Can the display show more ASCII characters than just letters of the alphabet? |
| Answer: Yes, the DV-1000 character set includes several special symbols. See Appendix B in the DV-1000 Manual for a complete listing of characters and symbols with their ASCII codes. |
| FAQ ID: 207 |
| Question: Do I have to enter the ASCII codes in instruction boxes, or can I just type in the letters? |
| Answer: Actually, you may do it either way. The LD/OUT and LDD/OUTD instructions may place ASCII codes in the text table, or the ACON instruction box can convert characters in the box to ASCII codes (see Chapter 4 of the DV-1000 Manual). |
| FAQ ID: 208 |
| Question: I need to show more than the display's 4 lines of text. Can I scroll or swap display screens? |
| Answer: Yes. The proper ladder logic will allow you to do this. Examples of multiple display screens and scrolling techniques may be found in Chapter 4 of the DV-1000 Manual. |
| FAQ ID: 209 |
| Question: Can I use the DV-1000 keypad to control machine functions, like Start, Stop, Step Jog, Run, etc.? |
| Answer: While technically possible, we strongly recommend against this type of application. Major machine control functions are best implemented with larger, dedicated switches, knobs, etc. The keys on the DV-1000 are intended primarily for various monitoring functions, or for occasionally changing V#memory Preset Values. See the next question and answer! |
| FAQ ID: 210 |
| Question: Are there other operator interfaces available from Automationdirect.com? |
| Answer: Yes. Please call our Technical Support Line for the latest information on other DirectLOGIC compatible products available from us or from industry affiliates. |
| FAQ ID: 211 |
| Question: Can the PLC sense when the operator makes keypad entries? |
| Answer: It depends. Bit Control Mode is designed for general key detection for eight of the ten available keys, which are redefined from their normal function. In the other modes, DV-1000 keypad activity cannot be detected in the PLC. |
| FAQ ID: 212 |
| Question: Can the display indicate when the DV-1000 is in Bit Control Mode? |
| Answer: Yes, but with some qualification. The display can be in Message Display Mode and the keypad in Bit Control Mode simultaneously (which is selectable as a powerup default mode). Ladder programming can detect keypad activity, and coordinate the message display to provide visual feedback from the keypad entry. However, the operator can leave the Message/Bit Control Modes if they desire. |
| FAQ ID: 213 |
| Question: Can I display a numeric value in Message Mode with a leading +/- sign? |
| Answer: Yes. An example ladder program that does this is in Chapter 4 of the DV-1000 manual. |
| FAQ ID: 214 |
| Question: Can I display a blinking text message during an alarm condition? |
| Answer: Yes. An example ladder program that does this is in Chapter 4 of the DV-1000 manual. |
| FAQ ID: 215 |
| Question: I plan to use the DV-1000 only with a DL230 or DL240. Is there low-cost DirectSOFT programming package available just for the DL205 family? |
| Answer: Yes. The PC-PGM-205 programming package is available, at an attractive price for the DL205-only user. |
| FAQ ID: 216 |
| Question: What is the purpose of the the adjustment screw at the bottom of the DV-1000 housing? |
| Answer: Rotate this screw to adjust the intensity of the display back-light. |
| FAQ ID: 217 |
| Question: Will the DV-1000 support the OP-9001? |
| Answer: Not at this time. |
| FAQ ID: 625 |