Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


Big K

#11539

Block skip on Universal A/I | 7 May, 1999

My company has a product line that utilizes multi-up PCB's. In order to cut costs for this product line, I have been asked to look into ways of running panels that contain bad blocks. Our SMT equipment is quite capable of doing this, but I need to know the capabilities of the auto-insertion equipment. We use Universal equipment for A/I, and someone recently told me that "block skipping" is possible by using the BEC hardware on these machines. Can someone provide me information on what needs to be done to utilize this function of these machines?

Big K

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Scott Cook

#11540

Re: Block skip on Universal A/I | 8 May, 1999

| My company has a product line that utilizes multi-up PCB's. In order to cut costs for this product line, I have been asked to look into ways of running panels that contain bad blocks. Our SMT equipment is quite capable of doing this, but I need to know the capabilities of the auto-insertion equipment. We use Universal equipment for A/I, and someone recently told me that "block skipping" is possible by using the BEC hardware on these machines. Can someone provide me information on what needs to be done to utilize this function of these machines? | | Big K | You need to utilize a utility within the UIC software which used to be called "bad board reject". Basically, if I remember correctly......a reflective dot must be placed on the x-outs in a given location. You program a "BEC check" at that location with a specific letter in one of the field codes, and every time it sees a dot, it skips the x-out. BBR should be in your equipment manuals, or call UIC's tech support. They'll walk you through it.

Scott

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#11541

Re: Block skip on Universal A/I | 9 May, 1999

| My company has a product line that utilizes multi-up PCB's. In order to cut costs for this product line, I have been asked to look into ways of running panels that contain bad blocks. Our SMT equipment is quite capable of doing this, but I need to know the capabilities of the auto-insertion equipment. We use Universal equipment for A/I, and someone recently told me that "block skipping" is possible by using the BEC hardware on these machines. Can someone provide me information on what needs to be done to utilize this function of these machines? | | Big K | Big K, Board Reject can be accomplish on your equipment.To use the this feature the following has to be performed. depending on the vintage of your equipment,a bit switch setting must be made on your CIT card,(older machines)-(bit 6 selected for BBR) or the same I believe for newer machines with the MIT card (bit 6). Then INSERT a new line in your PUT program before your BEC step using the same coordinates as the BEC line ,but using Z R as modifier and function codes. EXAMPLE: 0001 00000 00000 00000 00000 00000 00000 00000 D O (offset 1) 0002 05000 00000 00000 00000 00000 00000 00000 D O (offset 2) 0003 06700 07600 00425 00000 00000 00000 00000 Z R (Bad Bd ) 0004 06700 07600 00425 00000 00000 00000 00000 A Z (BEC Step) Then, used a somewhat transparent tape to cover the optic hole your sensing at, (left hole or right hole)I've used thin masking tape the cheap kind. Light must pass through but somewhat filtered, have less light, thus rejecting that board. I takes the right type of tape to work properly. Best regards SWUICSUP

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PCB machines

SP700avi inline smt screen printer