System Variable for Pallet location

[Jason812]

Does anybody know if there is a system variable assigned to the pallet that is in a machine? (Mori SH-500) We had an operator bone a spindle because "A" pallet was in the machine instead of the "B" pallet. I want to write a macro that would read the system variable for the pallet and throw an alarm if the wrong pallet was loaded.

Thanks,

Jason

[psychomill]

For the most part... No. You might have a variable that shows a pallet exists, but not which particular pallet. The control (if at all) will track A/B, 1/2 , etc. But its a simple toggle and for reference.

A couple ways to do what you're looking for though. You could identify a variable to use that only looks for pallet numbers. Then, depending on how your pallet change program is written, or how you sequence your operations between multiple pallets, will determine how to set up the variable and integers.

Another way is to use a machine probe. Do you have one? You can install a pin, bore a hole or use a unique feature for each pallet. By probing for the "identifier" first, the machine can confirm that the correct pallet and the correct program is being run.

[Jason812]

Dang, I figured that since you could see what pallet was in the machine under the Manual APC operation under the Custom menu then it would have a number assigned to it.

[psevin]

I am fairly certain that this information is present in a data table address (D380?), but not written to a macro variable. In the drawings for a SH500 that I have, X12.0 and X12.1 are the inputs that show when the A or B pallet is in the machine. If you can edit the ladder, you could write these to macro addresses (G54) you could read in a part program.

[Bluesman]

Originally Posted by Jason812 Does anybody know if there is a system variable assigned to the pallet that is in a machine? (Mori SH-500) We had an operator bone a spindle because "A" pallet was in the machine instead of the "B" pallet. I want to write a macro that would read the system variable for the pallet and throw an alarm if the wrong pallet was loaded. Thanks, Jason

Try this it is for a 16I but should work on most Fanuc. But the assignables for the pallets are Pallet 1 #1002 Pallet 2 #1003.
These Macros run off the M60 but you could probobly figure out a way to check with just a sub

Bluesman

O9001(PALLET CHANGE V1.3)
(VER 1.3 - FS/16IM,)

IF[#1002EQ1]GOTO1
IF[#1003EQ1]GOTO2
GOTO3
N1
G65P9003
G53
#525=0
#524=0
#520=10000
M99

N2
G65P9002
G53
#525=0
#524=0
#520=10000
M99

N3#3000=10(PALLET CHECK ALARM)
M30

O9002(LOAD PALLET #1)
(VER 1.2 - FS/16IM )
#33=#4003
IF[#1002EQ1]GOTO10
IF[#1003NE1]GOTO20
M11
G91G30Z0.0
G30B0.0
M10
M61(PALLET 1)
N10M11G#33
M99
N20#3000=10(PALLET CHECK ALARM)
M30

O9003(LOAD PALLET #2)
(VER 1.2 - FS/16IM )
#33=#4003
IF[#1003EQ1]GOTO10
IF[#1002NE1]GOTO20
M11
G91G30Z0.0
G30B0.0
M10
M62(PALLET 2)
N10M11G#33
M99
N20#3000=10(PALLET CHECK ALARM)
M30

[cnc-king]

Originally Posted by Jason812 Does anybody know if there is a system variable assigned to the pallet that is in a machine? (Mori SH-500) We had an operator bone a spindle because "A" pallet was in the machine instead of the "B" pallet. I want to write a macro that would read the system variable for the pallet and throw an alarm if the wrong pallet was loaded. Thanks, Jason

look in your manual each pallet has a code attached to it
eg
M71 pallet A
M72 pallet B

M84 Pallet A
M95 pallet B

eache machine builder uses different pallet recognition codes

[dpuch]

I agree with cnc-king, check for and use the M-codes the machine tool builder SHOULD have setup. But also keep in mind what psychomill said. It is possible to take the pallets out of the machine and swap them. Resulting in your pallet ID reversing.

Originally Posted by psychomill For the most part... No. You might have a variable that shows a pallet exists, but not which particular pallet. The control (if at all) will track A/B, 1/2 , etc. But its a simple toggle and for reference.

In my experience this is what the M-codes go by, not any physical ID of the pallets.

Dale

[Jason812]

Thanks everybody for the ideas. I went ahead and assigned a variable that is not used to the pallet change sub and then added two G codes for each pallet to be added to the tool safe line, similar to what Bluesman suggested.

Here's what I did, it works:

A pallet #519=1 Parameter #6055=100 G100 code
B pallet #519=2 Parameter #6056=200 G200 code
***********Add the following to the Pallet sub after the M60 before M99
N10
IF[#519 EQ 1]GOTO20
GOTO30

N20
#519=2
GOTO50

N30
IF[#519 EQ 2] GOTO40

N40
#519=1
GOT050
N50

*********** G100 A pallet check
O9015
N10
IF[#519 EQ 1] GOTO 40

N20
IF[#519 NE 1] GOTO30

N30
#3000=1(WRONG PALLET IN MACHINE)
N40
M99

*********** G200 B pallet check
O9016
N10
IF[#519 EQ 2] GOTO 40

N20
IF[#519 NE 2] GOTO30

N30
#3000=1(WRONG PALLET IN MACHINE)
N40
M99