Omron OMNUC W R88A-NCW152-DRT, Руководство пользователя

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6 DeviceNet Communications
6.5.2 General Command Bits and Status
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6.5.2 General Command Bits and Status
This section explains general command bits and status.
„ General Command Bits (Command)
The general command bit area is detailed below.
Mode: MOD
Use the MOD bit to specify the data block for bytes 1 to 7.
• 0: Move command block
• 1: Set/read command block
Note The MOD bit alters the data block for bytes 1 to 7. Set it carefully.
Alarm Reset Command: ALRST
Set the ALRST bit to 1 to reset the present alarm/warning. When an alarm or warning occurs
in the DeviceNet Unit or W-series Servo Driver, remove the cause of the alarm before set-
ting this bit to 1. The alarm/warming will be cleared.
Always make sure this bit is set to 0 during normal operation and after an alarm has been
cleared.
Emergency Stop Command: STOP
When the STOP bit is changed from 1 to 0, a move command is canceled and the servo of
the W-series Servo Driver is turned OFF. If the axis is travelling, axis travel is stopped
immediately and the servo of the W-series Servo Driver is turned OFF as soon as the Servo-
motor stops.
The STOP Command has negative logic to confirm that DeviceNet communications have
been established. Therefore, set the bit to 1 for normal operation and 0 for emergency stops.
The emergency stop status will continue while this bit is set to 0. To release the emergency
stop status, set the bit to 1. To turn ON the servo after releasing an emergency stop, set the
Servo ON Command bit to 0 and then 1.
Table 6.2 General Command Bits
Byte Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
0
MOD 0 ALRST STOP 0 0 SVON C_STRT