Installation
INSTALLATION
Connection of the control and communications signals
8.
309
DDS
HARDWARE
Ref.1310
RS-232/422 serial line connection with an ESA video terminal
The RS-232/422 connection of the ESA terminal with the drives is made
through the MSP connector located at the bottom of the VT module.
See
figure:
The MSP serial port (Multi Serial Port) is a part of any ESA video termi-
nal and is used to connect it with other devices. Hence, the project is
transferred from the PC to the VT through this port.
This port is accessed from a 25-pin female SUB-D connector and may es-
tablish communication with other devices through RS-232, RS-422, RS-
485 and C.L. (TTY-20 mA) protocols.
The pinout of the MSP connector is described in the following table:
F. H8/41
MSP connector of the ESA video terminal for the RS-422 connection.
NOTE. Pin 16 does not contemplate communicating with any type of
load. Any disturbance going into this pin can damage the video terminal
and the process.
T. H8/6 Pinout of the MSP connector.
* C.L. means < Current Loop >.
Pin Signal Pin Signal
1 Not connected 14 IKT OUT
2 TxRS232 OUT 15 IKR OUT
3 RxRS232 IN 16 +5 V DC (reserved)
4 RTS RS232 OUT 17 Not connected
5 CTS RS232 IN 18 * R x C.L. +IN
6 Not connected 19 Not connected
7 GND 20 Not connected
8 Not connected 21 Not connected
9 * TxC.L. + OUT 22 TxRx485+IN/OUT
10 TxRx485-IN/OUT 23 TxRS422 +OUT
11 * TxC.L. - OUT 24 RxRS422 -IN
12 TxRS422 - OUT 25 * R x C.L. - IN
13 RxRS422 +IN
Sub-D, F25
- Front view -
[ Sub-D, F25 ]
1
13
14 25
ESA panel (VT 150W)
Bottom view
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