Hitachi IR.LINK, User Manual, Page: 31 / 103

2 NAMES AND FUNCTIONS OF EACH PART
2-2
2.1 Names and Functions of Each Part
①
Module number setting switch
Use this switch to set up the main module and sub-
module.
Set IR.LINK as a sub-module when you install J.NET
(LQE540) or a J.NET-INT module (LQE545) on the
same CPU mount base.
Set up the main module and sub-module according to the
table shown below.
Setting No. Main module/sub-module
0 Main module
1 Sub-module
8, 9 Setting is disabled (T/M)
②
Bit rate setting switch
The bit rate setting switch is used to set a transmission
rate. The table below shows the relationship between
setting number and transmission rates.
Setting No. Transmission rate
0 1.0 Mbps
1 0.5 Mbps
2 0.25 Mbps
3 0.125 Mbps
8 to F Setting is disabled (T/M)
③ Terminal blocks for interface
TERM: Terminals for a terminating resistor. Short
TERM and A terminal when the IR.LINK
module is used at an end of the network.
A, B: Used to connect a transmission/reception data line.
SG: Used for signal ground terminal.
SHD: Used for shield ground terminal.
FG: Used for frame ground terminal.
④
LED for transmission
Comes on when the IR.LINK module starts transmitting
data.
⑤ LED for reception
Comes on when the IR.LINK module starts receiving
data.
⑥
LED for errors
Comes on when a hardware error is detected in the
IR.LINK module. When the IR.LINK module is
installed in a different system from the system in which
the parameters shown in “4.3 Commands” are set, a
parameter error occurs and this LED comes on. (See
“6.3.2 Hardware errors.”)
④
LQE546
IR.LINK
N1
TX
RX
ERR
MODU
No.
BIT
RATE
TERM
A
B
SG
SHD
N1
NOT
USED
NOT
USED
NOT
USED
NOT
USED
NOT
USED
FG
⑤
⑥
①
②
③