Cb (clear bit) – Yaskawa SMC–4000 User Manual
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SMC–4000 User Manual
CB (Clear Bit)
[I/O]
DESCRIPTION:
The CB command clears a bit on the output port by setting it to logic zero. Modbus outputs can be cleared
also.
ARGUMENTS: CB n
where
n is an integer corresponding to a specific output on the controller to be cleared (set to 0). The first output on
the controller is denoted as output 1. An
SMC–4000
controller has 8 digital outputs plus applicable I/O
connected by Modbus.
MODBUS:
Note: When using Modbus devices, the I/O points of the modbus devices are calculated
using the following formula:
n = (SlaveAddress*1000) + (HandleNum*1000) + ((Module-1)*4) + (Bitnum-1)
Slave Address is used when the ModBus device has slave devices connected to it and specified as Addresses
0 to 255. The use of slave devices for modbus are very rare and this number will usually be 0.
HandleNum is the handle specifier from A to H (1 - 8).
Module is the position of the module in the rack from 1 to 16.
BitNum is the I/O point in the module from 1 to 4.
USAGE:
RELATED COMMANDS:
EXAMPLES:
While Moving
Yes
Default Value
---
In a Program
Yes
Default Format
---
Command Line
Yes
Can be Interrogated
No
Used as an Operand
No
CB 1
Clear output bit 1
CB 2
Clear output bit 2
CB 3
Clear output bit 3
CB 6002
Clear output 2 on Modbus device on handle F