Use the real time clock, Slc output status to the interface module, Use the real time clock -16 – Rockwell Automation 1747-KE,D17476.12 DH-485/RS-232C Interface Module User Manual
Page 82
Publication 1747-UM005B-EN-P - March 2006
6-16 Module Configuration Using the Backplane
Use the Real Time Clock
You can use the interface module as a Real Time Clock in conjunction
with normal module operation.
Set up the Calendar/Clock Function by using the configuration
instructions found on page 6-2 and the configuration packet
information shown below.
SLC Output Status to the Interface Module
Bit
Word
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
(1)
Module
Mode
Bit
Data
Hand
shake
Bit
Read
or
Write
Bit
Reset
Interface
Module
Bit
Reserved
Data ID=1
1
Day (1...31)
2
Month (1...12)
3
Year (00...99)
4
Day of the Week (1...7, where Sunday=1 and Saturday=7)
5
Hour (0...23 [only 24 hour clock is available])
6
Minute (0...59)
7
Second (0...59)
(1)
The output status word is defined on page 6-6. To set the Real Time Clock, the Read or Write Bit must be 1. To read the Real Time Clock, the Read or Write
Bit must be 1 and the Module Mode Bit can either be at 0 or 1.