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Rockwell Automation GMLC Reference Manual User Manual

Page 818

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Publication GMLC-5.2 - November 1999

Understanding Discrete Data Transfers

781

Table 4: 1394 GMC Turbo Output Data from the SLC (maximum configuration, three 16-bit words)

Word

Bit

Description

Definition

0

0/0

Program running

This bit is set to 1 by the 1394 GMC Turbo while the GML Commander
application program is running. This bit cannot be accessed directly by the
application program.

0/1

Global fault

The 1394 GMC Turbo sets this bit to 1 if a fault has occurred. This bit cannot
be accessed directly by the GML Commander application program.

0/2

Reserved

N/A

0/3

Reserved

N/A

0/4

Reserved

N/A

0/5

M file handshake
enabled

When set to 1, this bit indicates that M files will be updated using manual
mode. When set to 0, this bit indicates that M files will be updated using
automatic mode.

0/6

M0 File update
acknowledge

This bit is set to 1 by the GML Commander application program to indicate
that an M0 file update has been acknowledged and in process. Bit 6 can be
written by the application program. The application program refers to this bit
as the system variable SLC_M0_Update_Acknowledge.

0/7

M1 file update
request

This bit is set to 1 by the GML Commander application program to request an
M1 file update. The 1394 GMC Turbo system software resets this bit to 0
when the update is complete. Bit 7 can be written by the application program.
The application program as the system variable SLC_M1_Update_Request.

0/8 –
0/15

User defined

N/A

1

1/0 –
1/15

User defined

N/A

2

2/0 –
2/15

User defined

N/A