GE GFK-1852 User Manual
Page 50
GFK-1852
Chapter 6 Serial Line Interfaces
6-3
Serial Line Interfaces
6
Item
Component
Name
Purpose
1
Screw terminal
RXD or
RXA
RS-232: RXD (Received Data)
RS-422/485:RXA (Received Data -)
2
Screw terminal
CTS or
RXB
RS-232: CTS (Clear to Send)
RS-422/485: RXB (Received Data +)
3
Screw terminal
RTS or
TXB
RS-232: RTS (Request to Send)
RS-422/485: TXB (Transmit Data +)
4
Screw terminal
TXD or
TXA
RS-232: TXD (Transmit Data)
RS-422/485: TXA (Transmit Data -)
5, 6, 7
Screw terminal
NC
No connection
8
Screw terminal
GND
Signal ground
9
Reset switch
RESET
Push to power reset and initialize
10
LED (Red)
Fault or
Configurati
on
SOLID: Fault in VMSE communication
(read error) or VMSE is in Configuration
Mode
11
LED (Green)
Ready
SOLID: Connection to network host
established
12
LED (Yellow)
Activity
FLASHING: Network traffic
13
LED (Green)
Link
SOLID: VMSE has good Ethernet link
14
Connector (RJ45)
Ethernet
port
RJ45 connector for Ethernet 10BaseT
15
Connector (RJ45)
Serial port
RJ45 connector for RS-232
16
LED (Yellow)
Serial TXD
FLASHING: Indicates transmission
from the serial port
17
LED (Yellow)
Serial RXD
FLASHING: Indicates reception
to the serial port
18
Switch
Switch for
screw block
UP: Serial RS-232
DOWN: Serial RS-422/485
19
Screw terminal
DC +
Operating power, positive
20
Screw terminal
Ground
Earth ground
21
Screw terminal
DC -
Operating power, negative
22
Screw terminal
Ground
Earth ground
Figure 6-3. Front Panel Components
NOTEs:
•
For RS-485 2-wire functionality, pins 1 & 4 and 2 & 3 of the screw terminals
must be connected together.
•
The RJ-45 Ethernet connector uses industry standard 10Base T connections.