Installation Instructions

Connect external components
Desk call station extension PTO2001-A1
7
98 | 122
A6V11899867_en--_a
7.2.5 Configuration
The RS232 communication requires proper ID settings of all PTO2001-A1.
Usually the PT2001-A1 are delivered with correct pre-configured ID settings of the
connected PTO2001-A1.
Fig. 55: PTO2001-A1 keypad numbering
7.2.6 Check the ID settings
Follow the steps below to check the ID settings:
1. Disconnect the 24 V power supply from the PTO2001-A1.
2. Press and hold the keypads 00 and 11 on the PTO2001-A1.
3. Connect the 24 V power supply to PTO2001-A1.
 The PTO2001-A1 switches to the configuration mode with a LED lamp test:
red/green/yellow LEDs are activated.
 Afterwards the ID is indicated with a green blinking LED (refer to the table
below).
4. Perform a power reset with a disconnecting and re-connecting of the 24 V
power supply.
Green blinking keypad
00
01
02
03
ID of PTO2001-A1
ID1
ID2
ID3
ID4