United Process Versapro Uživatelská příručka stáhnout pdf (Strana 13)

Important Product Information 13

GFK-1671P

Resolution: Add an ALW_ON contact in front of any single coil that has a vertical wire immediately in front of it. For

details, see CR73144 later in the document.

Ethernet Global Data (EGD) Issues

1. EGD configuration Compatibility Issue: VersaPro does not allow you to configure EGD exchanges for one byte of data

(or an odd number of bytes) when using word type memory such as %R, %AI or %AQ. These exchanges are always even

byte exchanges (2, 4, …).

Resolution: To send or receive one byte (or an odd number of bytes) of data via EGD to PLCs programmed with Control

or other non GE

PLCs, VersaPro must configure the EGD bytes in bit type memory (%I, %Q, etc). Word memory

(%R etc) does not allow addressing in individual bytes which means a word causes 2 bytes to be used in EGD transactions.

(CR72716)

Equality Issues

VersaPro may not always be equal after a load operation. Some of the more common causes are:

1. The program in the PLC was programmed by Logicmaster. Upon loading the program from the PLC, VersaPro

changes the programmer field from Logicmaster to VersaPro which creates an inequality.

Resolution: After loading from the PLC, store the same program back to the PLC. This will make the folder equal with the

PLC.

2. Loading into a different folder than originally stored to the PLC. If you load into a folder that has different content

than the program stored to the PLC, the folder may be unequal after the load because some variables may be unused and

have a different retentive state than in the PLC.

Resolution: It is recommended that you load into a new blank folder or into the same folder that was stored to the PLC to

avoid this problem. The other option is to use the Find Unused Variables command on the Folder menu, delete these

variables and then verify the program with the PLC.

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United Process Versapro Uživatelská příručka Strana 13