P Line Touch Panel
Interfaces of the Device
51
4.3.1.3
Transmitter Control
Switching between half-duplex and full-duplex is carried out by the DTR signal.
Full-duplex (DTR inactive / off):
The transmitter is always active and is not turned off on intermissions.
The receiver is always active.
Full-duplex (DTR active / on):
The transmitter is activated during the transmission. On intermissions, the trans-
mitter is highly resistive.
The receiver is disabled during the transmission. The operating device does not
receive the own transmit data at the receiver.
4.3.1.4
Diagnosis
Diagnostics LEDs are located on the rear of the operating device.
The diagnostic LEDs at the operating device have the following functions:
Table 4-6 Functions of the RS-422 / RS-485 diagnostics LEDs
Designation
Color
State
Function
Rx
Green
Flashes
Data transfer active
Tx
Yellow
Flashes
Data transfer active
Summary of Contents for P Line
Page 6: ...Overall Table of Contents P Line Touch Panel 6...
Page 42: ...Installation and Commissioning P Line Touch Panel 42...
Page 44: ...Control and Display Elements P Line Touch Panel 44...
Page 58: ...Interfaces of the Device P Line Touch Panel 58...
Page 62: ...Maintenance and Servicing P Line Touch Panel 62...
Page 98: ...Ordering Data P Line Touch Panel 98...
Page 100: ...100...
Page 101: ......