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Modular LYNX System
Modular LYNX System 12.05.2003
Figure 5.2: RS-232 Interface, Multiple Control Module System
Table 5.3: Connections and Settings Multiple Control Module System, RS-232 Interface
sedoNXNYLelpitluMrofsnoitcennoCdnAgniriW:ecafretnI232-SR
eludoMlortnoCtsoH 1#eludoMlortnoC #eludoMlortnoC n
7niP)-XR(ataDevieceR 9niP)-XT(ataDtimsnarT 9niP)-XT(ataDtimsnarT
8niP)+XR(ataDevieceR 01niP)+XT(ataDtimsnarT 01niP)+XT(ataDtimsnarT
9niP)-XT(ataDtimsnarT 7niP)-XR(ataDevieceR 7niP)-XR(ataDevieceR
01niP)+XT(ataDtimsnarT 8niP)+XR(ataDevieceR 8niP)+XR(ataDevieceR
11niPdnuorGsnoitacinummoC 11niPdnuorGsnoitacinummoC 11niPdnuorGsnoitacinummoC
NO=hctiwSTSOH
ro
)1(EURT=galFTSOH
FFO=hctiwSTSOH
ro
)0(ESLAF=galFTSOH
FFO=hctiwSTSOH
ro
)0(ESLAF=galFTSOH
NO=hctiwSYTRAP
ro
)1(EURT=galFYTRAP
NO=hctiwSYTRAP
ro
)1(EURT=galFYTRAP
NO=hctiwSYTRAP
ro
)1(EURT=galFYTRAP
DIR+
DIR-
SCK-
SCK+
GND
+5V
RX-
RX+
TX-
TX+
CGND
RX
TX
22
21
23
24
25
26
31
32
33
34
35
36
IG
INTELLIGENT MOTION SYSTEMS, INC.
FAULT
POWER
123456
22
21
23
24
25
26
123456
31
32
33
34
35
36
123456
A1
A0
A2
PT
HI
UG
GND
V+
TM
CGND
RX
TX
Host PC
RX+
TX-
TX+
RX-
CGND
Control Module #2
Control Module #1
RX+
TX-
TX+
RX-
CGND
To Other LYNX Control
Modules in the System.
Always place resistors at last unit.
120 Termination Resistors
are recommended at both
ends of the Data Lines when
cable length exceeds 15 feet.
W
HOST Switch = OFF
PARTYSwitch=ON
HOST Switch = OFF
PARTYSwitch=ON
Host Control Module
123
PT
HI
UG
HOST Switch ON
PARTY Switch ON
Data Cable Termination Resistors
Data Cable lengths greater than 15 feet (4.5 meters) are susceptible to signal reflection and/or noise. IMS
recommends 120Ω termination resistors at both ends of the Data Cables. An example of resistor placement is
shown in Figure 5.2. For systems with Data Cables 15 feet (4.5 meters) or less, the termination resistors are
generally not required. For more information and other RS-232 termination techniques, search the Internet for
"RS-232 Application Notes".