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B.
Telephone/Modem Connection: A standard RJ
-
11 modular phone jack is mounted on the front
panel of the System controller. Installation of the modem is optional. If the modem is equipped
and a phone line is connected, the Envision Software (827 MODBUS) may be used to remotely
access the shelf. Each System Controller must be modem equipped to provide remote access in
multi
-
shelf systems.
Figure 14 DB9 Pin
-
out
Terminal Capacity
Terminal Type
Recommended Wire Size
20 GA Maximum
DB9 Male (gold)
22 GA
PIN
FUNCTION
I/O
DESCRIPTION
1
DCD
I
Carrier Detect
(Unused)
2
RXD
I
Receive Data
3
TXD
O
Transmit Data
4
DTR
O
Data Terminal Ready
(Unused)
5
GND
-
System Ground
6
DSR
I
Data Set Ready
(Unused)
7
RTS
O
Request to Send
8
CTS
I
Clear to Send
(Unused)
9
RI
I
Ring Indicator
(Unused)
Table 7 Inverter Shelf Interface Cable Connection
1
5
6
9
