Omron CS1W-MCH71 -, Руководство по эксплуатации

Страница: 465 / 717

420
Interface Specifics
Section 7-4
7-4 Interface Specifics
This section provides detailed information on each bit in the PC IF Area and
the functions of data in allocated DM Area.
Response Time For each bit, description of ‘Timing Chart’ is provided. [T1] indicates the Unit
Scan while [Tu] indicates being not fixed.
Note The MC Unit supports processing of great amounts of data and varieties of
peripheral devices to realize multi-axis applications. Due to the fact, it takes
the MC Unit a certain period of time (8 seconds min.) to get ready for opera-
tion.
To make the MC Unit receive commands from the PLC without fail, the bit
[Unit Ready] is provided. When sending commands from the PLC to the MC
Unit, make sure to check the bit [Unit Ready].
For details of the bit [Unit Ready], see page 440.
7-4-1 Unit Control Bits
Function • If an error that requires stopping internal operation of the Unit occurs, it
will be detected as an alarm.
• Using Unit Alarm Reset after having removed the cause of the error can
clear the alarm.
Command and Operation
The alarm on Unit level will be cleared when the bit [Unit Alarm Reset] is
turned ON.
Status Condition
T1 Tu
Word Variable Bit Name I/O
n+0 IW0300 00 Unit Alarm Reset Output
Name Specifications
Unit Alarm Reset 0: Nil
1: Does not turn ON the bit [Unit Alarm]
↑
: Clears the alarm occurring on Unit level
↓
: Nil
Name Specifications
Alarm Occurring 0: No alarm occurring
1: Alarm occurring on MC Unit (linked to ERC indicator)
Unit Alarm Occurring 0: No alarm occurring on Unit level
1: Alarm occurring on Unit level