IDEC FC6A-C16K1CE Communications Manual page 135

Calculating Modbus Addresses for FC6A Series MicroSmart Devices
FC6A Series MicroSmart Device
M XXX X
I, Q, M
D XXXXX
R, T, C, D
Modbus Device Name
Coil
Input Relay
Input Register
Holding Register
FC6A S
Calculating Modbus Address
(
(1)
(2): Octal
(1): Decimal
Minimum
address
(
(3)
(3): Decimal
FC6A Series MicroSmart Device
Q0 - Q627
R000 - R255
M0000 - M2557
M2560 - M7997
M8000 - M8317
M10000 - M17497
I0 - I627
T000 - T255 (timer contact)
C000 - C255 (counter contact)
T256 - T1023 (timer contact)
C256 - C511 (counter contact)
T000 - T255 (timer current value)
C000 - C255 (counter current value)
T256 - T1023 (timer current value)
C256 - C511 (counter current value)
D0000 - D7999
D8000 - D8499
T000 - T255 (timer preset value)
C000 - C255 (counter preset value)
D10000 - D55999
T256 - T1023 (timer preset value)
C256 - C511 (counter preset value)
M S A -
ERIES ICRO MART LL IN
×
– ) 8 + +
(4) (2) (5)
Offset
– ) +
(4) (5)
Minimum Offset
address
Minimum Address (4)
0
0
0
2560
8000
10000
0
0
0
256
256
0
0
256
256
0
8000
0
0
10000
256
256
-O T C M
NE YPE OMMUNICATION
6: M C
ODBUS
Calculation Example
Example: M325
(32 – 0) × 8 + 5 + 1001 = 1262
Modbus address: 1262
1262 – 1 = 1261 = 04ED
Slave addresses in communication: 04ED
Example: D756
(756 – 0) + 400001 = 400757
Modbus address: 400757
Extract lower 5 digits → 757
757 – 1 = 756 = 02F4
Slave addresses in communication: 02F4
1
701
1001
3049
9001
11001
100001
101001
101501
102001
104001
300001
300501
302001
304001
400001
408001
409001
409501
410001
462001
464001
FC9Y-B1730
ANUAL
OMMUNICATION
Offset (5)
6-9