Gun Management; Spot Selection - Bosch PRC 7 00-L /W 402 Serie Typspezifische Anleitung

42/46 Bosch Rexroth AG | Electric Drives and Controls
7.2.8

Gun management

With initialization of the timer will be queried via the IO array which gun number at
which gun position is present.
A gun number zero at the IO array means no gun.
Parameter data and actual values of the current gun will be read from the MGDM.
If a gun will be undocked then will be reported on the IO array the gun number 0.
If a gun will be docked with running timer, then will be again reported back the
gun number.
Until version 1.10.3.13: With transition of a gun number 0 to unequal 0, the
parameter data and actual values of the respective gun has to be read from the
MGDM.
From version 1.10.3.13:
When a gun number 0 is changed to unequal 0, the contents of the MGDM
memory are compared with the data in the welding timer. If a difference is
detected, the timer reports an error 13016 "gun data are different in timer and
MDGM " and the additional information of the affected channel e.g. "MGDM
channel: 1".
If this error is acknowledged, the data from the MGDM are read into the controller.
The relevant electrode maintenance outputs will be set for the corresponding gun
position.
• Tip dress warning
• Prewarning
• End of stepper
After each welding schedule the corresponding electrode maintenance outputs
have to be refreshed and the actual values in the MGDM have to be increased.
Via the inputs
• Acknowledge tip dress
• Acknowledge tip change
happens the respective acknowledge.
7.2.9

Spot selection

The spot selection consists of a program share and a gun share.
The program share will be handled as follows:
After initialization oft he timer or docking of a gun will be defined a program
number timer internal, which will be signalled at the 7 segment display on the
respective HIP.
Via the +/- keys the program number will be increased or decremented and on the
7 segment display updated.
The program number run between 1 and 8.
The gun number will be read via the internal IO array.
The combination from program and gun number references to one of 8 weld spots
which are assigned to this gun, which are be stored in the timer.
With each change of the spot selection will the analog pressure output be
updated at the respective gun position (HIP).
R911381739 | PRC 7x00-Lx/Wx-402