12
Rev. 1.0
8/26/2015
TSM11 Hardware Manual
RS-232 to RS-422/485 4-wire Converter:
•
UT-202
is a recommended ‘RS-232 to RS-422’ converter from UTEK TECHNOLOGY
(SHENZHEN) CO, LTD.
(http://www.szutek.cn/)
The connection is as follows. It only supports
to establish the full-duplex (4-wire) RS-422 network. It can’t be used in the half-duplex (2-wire)
RS-485 network.
DB9 Male
(PIN)
Converter
Output
Drive
1
T/R+
RX+
2
T/R-
RX-
3
RX+
TX+
4
RX-
TX-
5
GND
GND
USB to RS-422/485 4-wire Converter
•
UT-890
is a recommended ‘USB to RS-422/485’ converter from UTEK TECHNOLOGY
(SHENZHEN) CO, LTD.
(http://www.szutek.cn/)
The connection is as follows. It supports to
establish either the half-duplex (2-wire) RS-485 network or the full-duplex (4-wire) RS-422
network.
DB9 Male
(PIN)
Converter
Output
Drive
1
T/R+
RX+
2
T/R-
RX-
3
RX+
TX+
4
RX-
TX-
5
GND
GND
Two-Wire Configuration
In a 2-wire system, the host must disable its transmitter before it can receive data. This must
be done quickly before a drive begins to answer a query. The TSM11 includes a transmit delay
parameter that can be adjusted to compensate for a host that is slow to disable its transmitter. This
adjustment can be made over the network using the TD command, or it can be set using the Step-
Servo Quick Tuner software. It is not necessary to set the transmit delay in a four wire system.
Drive#1
Drive#2
Drive#3
GND
GND
RX-
RX+
TX-
TX+
GND
RX-
RX+
TX-
TX+
RX-
RX+
TX-
TX+
120
to PC
to PC +
to PC GND
RS-422/485: 2-wire system diagram
NOTE: If the PC does not have an RS-422/485 serial port, a converter will be required.
NOTE: DO NOT send SCL Command “PR261” to the drive with two-wire configuration.
