Status Area

This section describes the usage of the status area (16 bits, output) and of status area odd parity (output).

Function

The signal outputs the result of I/O command processing to the external device.

Usage

The signal is used to execute an I/O command and obtain the result of the PLC.

ON Conditions

1.  When processing of the I/O given is completed, the status corresponding to the command will be set.
   "ON" represents the bit value = 1. "OFF" represents the bit value = 0.
2. "Parity bit" is odd parity.
3. Input 1 or 0 as the parity bit so that the total of 1s existing in the command area and status area parity will be odd. The status area counts even commands, which do not require any data area, in a parity calculation.

OFF Conditions

1. The signal will be turned OFF when the strobe signal is turned OFF.
2. If the strobe signal is turned OFF, before command processing is completed, the status signal will be output and then turned OFF within 100 ms.