Instruction Manual

10
The connections are shown for a single controller:
Multiple ANAFAZE 8 PIDs' are connected in series. R+ is connected to the first unit
TXD and TXD* from the first unit is connected to TXD of the next unit. These serial
connections are continued until the last unit is reached. The last unit TXD* is connected
to the computer R-. T+ is connected to the first unit RXD and the RXD* is connected to
the next unit. The last unit RXD* is connected to the computer T- as shown:
3.2.7 OPTICALLY ISOLATED RS-232 INTERFACE
The optically isolated interface allows connection to computers using RS-232 with
additional noise protection. Many computer RS-232 interfaces connect the RS-232 signal
ground directly to the computer third wire ground. Thus any power line noise is directly
connected to the ANAFAZE 8 PID through the serial interface. In addition if there is
common mode voltage between the ANAFAZE 8 PID and the computer this noise will
also be coupled into the communication lines. To prevent this problem for RS-232 users,
the optically isolated RS-232 interface is recommended. The connections are different
from the normal serial interface since the ground is isolated. The connections are as
diagrammed: