Rockwell Automation 1794-APB/B FLEX I/O PROFIBUS Adapter Module User Manual - Manual (Page 66)

2–46 How Communication Takes Place and I/O Image Table Mapping
Publication 1794ĆUM057B-EN-P - November 2001
Write Words
Decimal Bit
(Octal Bit)
Definition
Write Word 1 Bits 00-12
(00-14)
Not used
Bit 13-14
(15-16)
Safe State Source bits (S1/S0). - When EN is 0, these bits designate the
source of the safe state data.
Bit 13 = 0, bit 14 = 1 - reset outputs to 0V/0mA (used with 1794ĆASB/C)
Bit 13 = 1, bit 14 = 1 - hold output at its current level (used with 1794ĆASB/C)
Bit 13 = 0; bit 14 = 0 - Safe state data is in output data words
Bit 15 (17) Output enable bit (EN). - When set (1), the outputs are enabled. This bit
must be set in order for the real time data to appear at the outputs. If this bit
is not set (0), the outputs will be determined by S1/S0.
Word 2 Bits 00-15
(00-17)
Channel 0 output data. - The output data is real time data formatted to the
selected configuration. (This data is also safe state data when directed by S!
and S0.)
Word 3 Bits 00-15
(00-17)
Channel 1 output data. - The output data is real time data formatted to the
selected configuration. (This data is also safe state data when directed by S!
and S0.)
Word 4 Bits 00-15
(00-17)
Channel 2 output data. - The output data is real time data formatted to the
selected configuration. (This data is also safe state data when directed by S!
and S0.)
Word 5 Bits 00-15
(00-17)
Channel 3 output data. - The output data is real time data formatted to the
selected configuration. (This data is also safe state data when directed by S!
and S0.)
Word 6 Channel Configuration (refer to Configuring Your Outputs)
Bits 00-03 Channel 0 Configuration
Bits 04-07 Channel 0 Configuration
Bits 08-11
(10-13)
Channel 0 Configuration
Bits 12-15
(14-17)
Channel 0 Configuration