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COMPONENT IDENTIFICATION
■ FRONT VIEW
(A)
(B)
(C)
1 2 3 4 5 6 7 8
X10
X1
PWR
ERR
RD
RUN
SD
NODE ADD.
B.RATE
4
5
6
7
10 11 12 13
1
2
3
1
2
(G)
■ LEFT SIDE VIEW
(I)
(A) Status Indicator LED
(B) Station Address Setting Rotary SW
(C) Baud Rate Setting Rotary SW
(D) Operation Mode Setting DIP SW (SW1)
(E) PC Configurator Jack
(F) Discrete Output Status Indicator LED
(G) Modbus, Power Supply Terminal
(H) Output Terminals
(I) Terminating Resistor SW
■ STATUS INDICATOR LED
ID
COLOR
FUNCTION
Turns on when the internal 5V is sup-
PWR
Red
plied normally.
Turns on when the data is received
RUN
Red
normally.
Turns on when the received data is ab-
ERR
Red
normal. Blinks when setting is abnormal.
Turns on when the module is transmit-
SD
Red
ting.
RD
Red
Turns on when the module is receiving.
■ DISCRETE OUTPUT STATUS INDICATOR LED
LED red indicators show the signal status.
ON : a contact output (NO)
OFF : b contact output (NC)
■ NODE ADDRESS
Node Address is selected between 1 and 99 in decimal. The
left switch determines the tenth place digit, while the right
switch does the ones place digit of the address.
(D)
(E)
(F)
0 1 2 3
CNFG.
14
15 16 17 18
3
4
5
6
7
8
9
(H)
Factory setting : 00
Node Address Setting (x1)
Node Address Setting (x10)
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: info@m-system.co.jp
■ BAUD RATE
Baud Rate is selected with the rotary switch.
(Factory setting 0).
0: 38.4 kbps
1: 19.2 kbps
2: 9600 bps
3: 4800 bps
4: 2400 bps
■ OPERATING MODE
• Output at the Loss of Communication: SW1-4
SW1-4
OUTPUT AT THE LOSS OF COMMUNICATION
B contact output
OFF
(Discard the last data received normally)
Hold the output (*)
ON
(maintains the last data received normally)
(*) Factory setting
Note: Be sure to set unused SW1-1 through 1-3 and 1-5
through 1-8 to OFF.
■ POWER SUPPLY, MODBUS TERMINAL ASSIGNMENT
4
5
DA
DG +24V
1
DB
(1) DB
(2) SLD
(3) FG
(4) DA
(5) DG
(6) +24V
(7) 0V
■ OUTPUT TERMINAL ASSIGNMENT
10
11
12
13
+24V
Y0
Y1
Y2
1
2
3
4
5
0V
COM0
COM0
COM0
COM0
NO.
ID
FUNCTION
1
0V
0V
2
COM0
Output common 0
3
COM0
Output common 0
4
COM0
Output common 1
5
COM0
Output common 1
6
COM1
Output common 2
7
COM1
Output common 2
8
COM1
Output common 3
9
COM1
Output common 3
■ TERMINATING RESISTOR
To use the terminating resistor, turn the switch ON, and
OFF to invalidate.
(Factory setting OFF)
■ EXTENSION MODULE
Combinations with all extension modules are available
R7M-DC4G
5: 1200 bps
6: 14.4 kbps
7: 28.8 kbps
8: 57.6 kbps
9: 115.2 kbps
Baud Rate Setting
6
7
0V
2
3
SLD
FG
–
Shield
FG
–
–
Power input (24V DC)
Power input (0V)
14
15
16
17
18
Y3
Y4
Y5
Y6
Y7
6
7
8
9
COM1
COM1
COM1
COM1
NO.
ID
FUNCTION
10
+24V
24V DC
11
Y0
Output 0 (NO)
12
Y1
Output 0 (NC)
13
Y2
Output 1 (NO)
14
Y3
Output 1 (NC)
15
Y4
Output 2 (NO)
16
Y5
Output 2 (NC)
17
Y6
Output 3 (NO)
18
Y7
Output 3 (NC)
EM-7803-BB P. 2 / 4
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