IDEC SmartAXIS FT9Z-1A01 User Manual page 277

Address Map
Modbus Device Name
Coil
(000000 and above)
Input Relay
(100000 and above)
Input Register
(300000 and above)
Holding Register
(400000 and above)
*1: Addresses generally used for Modbus communication. Calculation method of Modbus addresses for SmartAXIS devices are described below.
*2: These 4-digit addresses are used in the communication frame. To calculate the address used in communication frame, extract lower 5 digits of
the Modbus address, subtract 1 from the value, and convert the result into hexadecimal.
*3: Access within the device range for the SmartAXIS type used.
Calculating Modbus Addresses for SmartAXIS Devices
SmartAXIS Device
M XXX X
I, Q, M
D XXXXX
R, T, C, D
Modbus Device Name
Coil
Input Relay
Input Register
Holding Register
Modbus Address Communication
*1
Map (Decimal) Frame Address
000001 - 000112 0000 - 006F
000701 - 000828 02BC - 033B
001001 - 002024 03E8 - 07E7
009001 - 009144 2328 - 23B7
100001 - 100126 0000 - 007D
101001 - 101200 03E8 - 04AF
101501 - 101700 05DC - 06A3
300001 - 300200 0000 - 00C7
300501 - 300700 01F4 - 02BB
400001 - 402000 0000 - 07CF
408001 - 408200 1F40 - 2007
409001 - 409200 2328 - 23EF
409501 - 409700 251C - 25E3
Calculating Modbus Address
(
(1)
(2): Octal
(1): Decimal
(
(3)
(3): Decimal
SmartAXIS Device
Q0 - Q141
R0 - R127
M0 - M1277
M8000 - M8177
I0 - I155
T0 - T199 (timer contact)
C0 - C199 (counter contact)
T0 - T199 (timer current value)
C0 - C199 (counter current value)
D0 - D1999
D8000 - D8199
T0 - T199 (timer preset value)
C0 - C199 (counter preset value)
S A XI S P
M AR T R O
SmartAXIS Device
*2
Q0 - Q141
R0 - R127
M0 - M1277
M8000 - M8177
I0 - I155
T0 - T199 (timer contact)
C0 - C199 (counter contact)
T0 - T199 (timer current value)
C0 - C199 (counter current value)
D0 - D1999
D8000 - D8199
T0 - T199 (timer preset value)
C0 - C199 (counter preset value)

– ) 8 + +
(4) (2) (5)
Minimum Offset
address
– ) +
(4) (5)
Minimum Offset
address
Minimum Address (4)
/ L U ' M FT9Y-B 1378
I TE SER S ANUAL
11: M C
ODBUS OM M UN I CATI ON
*3
Calculation Example
Example: M325
(32 – 0)  8 + 5 + 1001 = 1262
Modbus address: 1262
1262 – 1 = 1261 = 04ED
Communication frame address: 04ED
Example: D756
(756 – 0) + 400001 = 400757
Modbus address: 400757
Extract lower 5 digits  757
757 – 1 = 756 = 02F4
Communication frame address: 02F4
0
0
0
8000
0
0
0
0
0
0
8000
0
0
Applicable
Function Code
1, 5, 15
2
4
3, 6, 16
3
Offset (5)
1
701
1001
9001
100001
101001
101501
300001
300501
400001
408001
409001
409501
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