PMAC Product Guide Troubleshooting Getting PMAC to Communicate Again 1. Turn off PMAC or the host computer where PMAC is installed. 2. Remove all cables connected to PMAC and only connect the serial port and power cables if necessary. 3. Check that all PMAC jumpers are at the default configuration or properly changed to accommodate the particular setup for the machine. Make sure that jumper E50 is properly installed because otherwise any SAVE command issued to PMAC will not have any effect (and the problem will return when E51 is removed). 4. Install jumper E51. This is a hardware re-initialization jumper that takes effect on power-up. 5.
After power-up, try establishing communications again with a software package like PEWIN or EZ- PMAC Setup Software provided by Delta Tau. 6. If communication is established, perform the reset procedure described in the following section. Resetting PMAC to Factory Defaults 1. Type the following commands on the terminal window. This procedure will set all PMAC variables to their default configuration and any Motion Program and PLC program will be erased from memory.
$$$*** ;Global Reset P0..1023=0 ;Reset P-variables values Q0..1023=0 ;Reset Q-variables values M0..1023->* M0..1023=0 ;Reset M-variables definitions and values UNDEFINE ALL ;Undefine Coordinate Systems SAVE ;Save this initial, “clean” configuration 2. If the re-initialization E51 jumper was installed, remove it at this time. Restore all PMAC connections and power it up. 3. Try communications again and configure PMAC for the application. Save a backup file to the host computer with all the parameters and programs that PMAC needs to run the application.
Furthermore, since the host computer can also fail and be replaced, save the configuration file both in the host computer and in a floppy disk stored in a safe place. This file must be downloaded and a SAVE command must be issued to PMAC. Note: The EZ-PMAC Setup Software has a set of step-by-step procedures for establishing PMAC communications, for performing different reset procedures, and also has dedicated screens for backup and restoring a particular PMAC configuration. Before Calling for Help One of the most important services that Delta Tau provides is the excellent technical support for all its products.
To provide better service, have the following information prepared before contacting us: 1. The PMAC model. In this case, it is the Universal PMAC Lite board. 2. The information from these commands issued from a terminal window: Type, Version and Date. 3. The part number read from the PMAC board (usually located on the soldering side of the board). In this case, use the number 602402 followed by three more digits describing the revision number. 8 Introduction