5 Installation
20
Version: 2.0.0
PZ166E
E-625 Piezo Servo Controller
Tools and accessories
PC with a Windows or Linux operating system
Null modem cable or USB cable (USB-A(m)/USB-mini B(m)) for the connection to the PC
(cable included in the scope of delivery).
Connecting the E-625.CR to the PC
Connect the
RS-232
socket using the null modem cable or the USB socket using the USB
cable to the PC.
5.8.2
Interlinking the Controllers
INFORMATION
The individual devices are interlinked using an l
2
C-bus. This connects lines 3 and 4 on the
Network
socket and a ground wire (1, 2 or 5) to the corresponding wire. Furthermore, for all
interlinked E-625.CRs, the sensors must be synchronized over the lines 7 and 8 on the
Network
socket. Using E-625.CN network cables from PI ensures that all stated connections exist, for
details see the pin assignment of the cable (p. 73).
INFORMATION
The capacity of the I
2
C bus is 400 pF. The larger the number of devices to be interlinked, the
shorter the lines between the devices have to be. The maximum length of the bus must not
exceed 1 m.
When you use E-625.CN network cables, you can interlink a maximum of 4 devices.
If you need to interlink more than 4 devices, use the E-621 piezo servo controller modules
from PI.
Up to 12 of these modules can be installed in one housing where they are interlinked over
the backplane of the housing.
INFORMATION
The E-625, which is connected to the PC over the RS-232 or USB connection (communication
master), forwards the commands to the other E-625 (communication slaves) in the network.
The responses from the communication slaves are returned to the PC via the communication
master.
Requirements
All devices to be interlinked are switched off, i.e. for all E-625, the wide input range
power supply is
not
connected to the power socket over the power cord.
The piezo servo controller that serves as the communication master is connected to the
PC over the RS-232 or USB connection.
