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VSE 002
RS-485 module
Publication version: VVSE2/EN M/B006
User manual
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Table of Contents
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VVSE2/EN M/B006
Table of Contents
1. General .................................................................................... 3
2. Power supply .......................................................................... 3
3. Module interface to the VAMP relays or master device ...... 3
4. RS-485 interface ..................................................................... 4
5. Module layout ......................................................................... 5
6. Module mounting ................................................................... 5
7. Module connection to a PC ................................................... 6
8. Ordering codes ....................................................................... 6
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1 General
VSE 002 External RS-485 Module
VVSE2/EN M/B006
3
Pin number
TTL mode
RS-232 mode
1 - -
2
RXD (in)
RXD (in)
3
TXD (out)
TXD (out)
4
RTS (in)
RTS (in)
5
6
7
GND
GND
8
9
+8V (in)
+8V (in)
The active state of the RTS signal is positive
voltage (> +3V) in both TTL and RS-232 modes.
1. General
External RS-485 Module VSE 002 is used to connect VAMP
protection relays to a RS-485 bus.
Additionally this module can be used with any device, which has a
RS-232 or TTL serial interface, when an RS-485 interface is
required.
2. Power supply
The power for the module is taken from pin 9 of the D-connector or
from an external power supply interface. There is a screw terminal
(X1, see figure 1) for connecting an external +9...12Vdc power
supply.
3. Module interface to the VAMP relays or master device
The physical interface to the device is a 9-pin D-connector. The
signal levels may be either TTL or RS-232.
The TTL/RS-232 interface of the modules is:
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VSE 002 External RS-485 Module
4 RS-485 interface
4
VVSE2/EN M/B006
Termination
ON
OFF
Interface type
TTL
RS-232
4. RS-485 interface
The RS-485 interface supports 2-wire connection. The dip switch
S1 is used to switch the termination and signal biasing resistors on
or off.
Figure 1. Dipswitch positions of VSE 002
The direction control of the RS-485 transceiver is done with the
RTS signal or automatically. The automatic direction control turns
the transceiver to transmit mode after detecting the falling edge of
a 0-bit. The direction is kept in transmit mode for 0,5ms. This
enables the use of the automatic mode with 9,6 kb/s and 19.2 kb/s
speeds. When the transceiver is changed to receive mode, the
RS-485 line changes state to logic 1 state due to the biasing
resistors.
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5 Module layout
VSE 002 External RS-485 Module
VVSE2/EN M/B006
5
5. Module layout
Figure 2. Component layout
6. Module mounting
Figure 3. Mounting picture of module
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VSE 002 External RS-485 Module
7 Module connection to a PC
6
VVSE2/EN M/B006
PC serial interface
VSE 002
Function
Pin
number
Pin
number
Function
CD (in)
1 1
-
RXD (in)
2 2
RXD (in)
TXD
(out)
3 3
TXD
(out)
DTR
(out)
4 4
RTS (in)
GND
5 5
-
DSR (in)
6 6
-
RTS
(out)
7 7
GND
CTS (in)
8 8
- - 9 9
+8V (in)
7. Module connection to a PC
The module can be used with a PC, the required cable is
described in figure 4. When used with a PC an external power
supply is needed (e.g. type Phoenix Contact 100 – 240 AC/10-15
DC/2, Order-No. 29 83 75 6).
Figure 4. PC interface cable
8. Ordering codes
VSE 002 RS-485interfacemodule
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Schneider Electric
35 rue Joseph Monier
92506 Rueil-Malmaison
FRANCE
Phone: +33 (0) 1 41 29 70 00
Fax: +33 (0) 1 41 29 71 00
www.schneider-electric.com
Publication version: VVSE2/EN M/B006
Publishing: Schneider Electric
02/2013
Customers Care Center
http://www.schneider-electric.com/ccc
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