I3H08-12IBD
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5/12/2010
Page 3 of 5
3.3
i3H Base Ports and Connectors
3.3.1
Primary Power Port / Grounding
a.
Port 1 (MJ1) / Port 2 (MJ2) Modular Jacks
Figure 6 – Close-up of Port 1 (MJ1) / Port 2 (MJ2) (RS-232 and RS-485)
The I3H base has power, network, programming and fiber optic ports. Three RS-232 and RS-485 ports are available. (Default programming port is MJ1)
Parallel
Port
Port 2
Port 3
Port 1
LAN
Primary Power
Connector
001QX005
Parallel
Port
Port 2
CN1
Port 1
Parallel
Port
Port 2
Port 3 Port 1
LAN
Primary Power
Connector
001QX006
i3H10
10”
i3H08
8”
i3H12
12”
Port 3
MJ1
MJ2
MJ1
MJ1
MJ2
MJ2
CN1
CN1
Primary Power
Connector
Figure 5 – I3H Base Ports and Connectors
Table 4 – Primary Power Port Pins
Signal Pin
Description
V+
Input power supply voltage
V-
Input power supply ground
Frame Ground
Note: Power Supply Voltage Range is from 24VDC
±±±±
10%.
3.3.2
RS-232 Port / RS-485 Port
There are a variety of ways to connect to the RS-232 and RS-485 ports; You can use
two modular jacks (MJ1 and MJ2) or the 25-pin Dsub connector (CN1).
Table 5 – Ports and Functions (Port 1, 2, and 3)
Functions
Port 1 (MJ1)
Port 2 (MJ2) Port 3 (CN1)
RS-232
2
2
2
2
2
2
2
2
2
2
2
2
RS-485
2
2
2
2
2
2
2
2
2
2
2
2
Hardware Handshaking
2
2
2
2
Programming
2
2
2
2
Ladder Function
Controlled
2
2
2
2
2
2
2
2
2
2
2
2
Modem
2
2
2
2
*
2
2
2
2
*
2
2
2
2
* Not supported by i3 Config Modem Function Blocks
1 2 3 4 5 6
Table 6 – Port 1 (MJ1) / Port 2
(MJ2) Pins
Pin
Signal
1
+SD/RD
2
-SD/RD
3
+5V
4
+5V
5
0V
6
0V
7
RXD
8
TXD
Output power supply: Max.
150mA
Figure 7 – Port 3 (CN1) RS-232 / RS-485 Connector
b.
Port 3 (CN1) Connector
Table 7– Port 3 (CN1) Pins
Pin #
Signal
Pin #
Signal
1
FG
14
I3H451, 551, 651: +RTS
2
TXD
15
Not Used
3
RXD
16
Not Used
4
RTS
17
I3H451, 551, 651: -RTS
5
CTS
18
-CTS
6
Not Used
19
+CTS
7
SG
20
Not Used
8
Not Used
21
Not Used
9
+5V
22
Not Used
10
0V
23
Not Used
11
Not Used
24
+RD
12
+SD
25
-RD
13
-SD
1
13
14
25
3.3.3
DIP-Switch
The DIP switch is used for setting the terminating resistance of the RS-485 signal line at the CN1,
MJ1, or MJ2 connector.
Figure 7 – DIP Switch
(1)
Set DIPSW 8 to ON position when termination is required on MJ2.
(2)
Set DIPSW 7 at the terminating station of the i3H units to the ON position when
connecting PLCs through RS-422/485.
(3)
Set DIPSW 6 to ON position when termination is required on MJ1.
