Connection Requirements
Supported PLC Series
| PLC-AES | PLC-FB | PLC-ES |
|---|---|---|
| ✓ | ✓ | ✓ |
Supported Data Registers
| M | X | Y | K | L | F | T | C | S | Z | R | Q | D | @D | Constant |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
Supported Flags
| Flag | Bit | Support |
|---|---|---|
| Error | F11.0 | – |
| Zero | F11.1 | – |
| Carry | F11.2 | – |
Number of Steps
| Steps |
|---|
| 1 |
Notice
Connection Behavior
The ORB block parallel connection behaves as follows:
- An OR operation is performed on block A and block B and uses the new result as a new execution condition.
- ORB performs parallel connections of circuit blocks with two or more contacts.
- Use OR (Open Contact or Rising Edge Contact) or ORI (Closed Contact or Falling Edge Contact) for circuit blocks with single contacts.
- ORB is not required to circuit blocks with a single contact.
- ORB is not a contact signal.
- ORB is a connection signal.
- In the Instruction List (IL) mode, ORB can be written consecutively up to 15 connections (16 blocks).
- If more ORB connections are written consecutively, the operation may not be performed properly.
ORB refers to the bus bar connection between the two blocks vertically.
Ladder Diagram Examples
The ORB block parallel connection performs an OR operation across two blocks.
The ORB block parallel connection will NOT perform an OR operation diagonally across two blocks.
If all contacts in both blocks are powered ON, the ORB block parallel connection will perform an OR operation on all contacts.
