IC655CCM590 Converter
GFK-0356Q Appendix C IC655CCM690 Isolated Repeater/Converter C-9
C
150 OHMS
150 OHMS
SD (A)
SD (B)
RD (A')
RD (B')
RTS (B)
CTS (B')
RTS (A)
CTS (A')
TERM
TERM
GND
SD (A)
SD (B)
RD (A')
RD (B')
RTS (A)
CTS (A')
RTS (B)
CTS (B')
GND
SHLD
ALSO IT IS RECOMMENDED TO MAKE ANY
CONNECTIONS INSIDE THE CABLE CONNECTOR
MOUNTED ON THE CMM. IT IS NOT
USE TERMINAL STRIPS OR OTHER TYPES
CONNECTORS ALONG THE LENGTH OF
TRANSMISSION
NOTE
WHEN WIRING RS-422 /485 MULTIDROP
REFLECTIONS ON THE TRANSMISSION LINE
REDUCED BY CONFIGURING THE CABLE IN A
CHAIN FASHION AS SHOWN
CMM SLAVE 1MASTER
CMM SLAVE 2CPU BUILT-IN PORT
16
17
15
14
12
10
13
11
22
23
7
25- PIN
FEMALE
SERIES 90
CMM
PORT
1 OR 2
TO OTHER DEVICES
(MAXIMUM OF 8 DEVICES ON A MULTIDROP)
MAKE CONNECTIONS
INSIDE D-CONNECTORS
SHIELDED
TWISTED
PAIRS
25- PIN
MALE
13
25
9
21
12
24
10
11
22
23
7
1
PIN
RD (A')
RD (B')
SD (A)
SD (B)
TERM
TERM
RTS (A)
CTS (A')
RTS (B)
CTS (B')
0V
SHLD
25- PIN
FEMALE
SERIES 90
CMM
PORT
I
OR
2
**
9
21
13
25
12
24
10
11
22
23
7
1
25- PIN
MALE
PIN
TERM
TERM
PIN
25- PIN
MALE
ISOLATED
REPEATER/
CONVERTER
(BRICK)
25- PIN
FEMALE
SW
SUBSTITUTE APPROPRIATE UP STREAM DEVICE
(WITHIN DOTTED BOX) PER SYSTEM DIAGRAMS.
TERMINATE CONNECTION ON FIRST AND LAST DROPS ONLY: ON THE CMM, INSTALL JUMPER TO CONNECT INTERNAL 120 OHM
RESISTOR. ON THE ISOLATED REPEATER/CONVERTER, INSTALL 150 OHM RESISTOR (SUPPLIED)
ON THE CMM311, ONLY PORT 2 CAN SUPPORT RS-422/RS-485.
TERMINATE THE RD (B') SIGNAL ONLY AT END
OF MULTIDROP CABLE
RD (A')
RD (B')
SD (A)
SD (B)
TERM
TERM
GND
15
14
16
17
22
23
7
PIN
25- PIN
MALE
ISOLATED
REPEATER/
CONVERTER
(BRICK)
(USED AS A
CONVERTER)
CTS
SW
25- PIN
FEMALE
RD (A')
RD (B')
SD (A)
SD (B)
TERM
TERM
GND
16
17
15
14
19
18
7
PIN
25- PIN
MALE
ISOLATED
REPEATER/
CONVERTER
(BRICK)
(USED AS A
REPEATER)
SW
J
1
25- PIN
FEMALE
*
150 OHMS
ON
J2
J1 J1
J2
ON
J2
J1
Figure C-8. Cable C; RS422 Twisted Pair
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