Omron PRT1-COM Operation Manual page 46

Functions
PRT1-COM with
station address 05
I/O Unit
addresses
Area allocated
IR50
to station i
IR51
address 05 address 05
IR52
IR53
IR54
IR55
Area allocated IR56
to station i
IR57
address 12 address 12
IR58
IR59
IR60
IR61
3-2-4 I/O Unit Interface Status
Example: C200HW Series with PRM21 default I/O mapping
PROFIBUS-DP Network
#0 #1 #2
32 outputs 4-point 16 inputs
Analog
Output Unit
Output area
32 output bits for p
U i #0 Unit #0
4 analog outputs for g p
Unit #1 U i #1
4 analog outputs for g p
Unit #1 U i #1
32 output bits for p
U i #2 Unit #2
The following I/O Unit interface status is maintained in the CPU Unit.
• I/O Unit connection information (I/O Unit interface status)
• Registered I/O Unit addresses
• Error I/O Unit addresses
As shown in the following diagram, the status consists of two words. The first two
words of the Communication Unit allocation input area in the CPU Unit are
allocated for this status. Include a program section in the CPU Unit to check this
status and perform error processing.
0 wd
+1 wd
PRT1-COM with
station address 12
#3 #0
16 inputs 16 inputs
Area allocated
IR350
to station i
IR351
address 05 address 05
IR352
IR353
Area allocated
IR354
to station i
IR355
address 12 address 12
IR356
I/O Unit connection information
Error I/O Unit addresses Registered I/O Unit addresses
Section 3-2
#1 #2
4-point 32 outputs
Analog
Output Unit
Input area
I/O Unit interface /
status for station 05 f i 0
16 input bits for Unit #2
16 input bits for Unit #3
I/O Unit interface /
status for station 12 f i 12
16 input bits for Unit #0
33