Modbus Tcp Server - IDEC FC6A-C16K1CE Communications Manual

6: M C
ODBUS OMMUNICATION

Modbus TCP Server

When the FC6A Series MicroSmart is configured as the Modbus TCP server, Modbus TCP client devices can read/write data to the
FC6A Series MicroSmart. When the FC6A Series MicroSmart receives a valid request from a Modbus TCP client device, the data is
read or written according to the request received. The communication data received from Modbus TCP clients is processed at the
END processing of the user program.
Modbus TCP Server Specifications
Slave Number
Response Time
Number of Clients that can Access Simultaneously
Port Number
Supported Function Code
*1 The number when all eight connections are set to Modbus TCP server.
Map of Slave Addresses for the Modbus TCP Server
Modbus TCP client can access the Modbus devices (Coil, Input Relay, Input Register, and Holding Register) of Modbus server to
read or write the device data (I, Q, M, R, T, C, and D) of FC6A Series MicroSmart. Refer to the following table to configure the
Modbus TCP clients.
Modbus Device Name
Coil
(000000 and above)
Input Relay
(100000 and above)
Input Register
(300000 and above)
Holding Register
(400000 and above)
*1 Slave addresses in communication are 4-digit values used in the address portion of the communication frame. Subtract 1 from the lower 5 digits
of the slave address and store that value in hexadecimal. For details, see "Modbus RTU Slave Communication" on page 6-8.
*2 Access within the device range for the FC6A Series MicroSmart type used.
6-24
Parameter
*1
Slave Addresses in
Slave Addresses
000001 - 000504 0000 - 01F7
000701 - 000956 02BC - 03BB
001001 - 003048 03E8 - 0BE7
003049 - 007400 0BE8 - 1CE7
009001 - 009256 2328 - 2427
011001 - 017000 2AF8 - 4267
100001 - 100504 0000 - 01F7
101001 - 101256 03E8 - 04E7
101501 - 101756 05DC - 06DB
102001 - 102768 07D0 - 0ACF
104001 - 104256 0FA0 - 109F
300001 - 300256 0000 - 00FF
300501 - 300756 01F4 - 02F3
302001 - 302768 07D0 - 0ACF
304001 - 304256 0AF0 - 10A0
400001 - 408000 0000 - 1F3F
408001 - 408500 1F40 - 2133
409001 - 409256 2328 - 2427
409501 - 409756 251C - 261B
410001 - 456000 2710 - DABF
462001 - 462768 F230 - F52F
464001 - 464256 FA00 - FAFF
FC6A S M S A
ERIES ICRO MART
Ignored
1.5 ms
8 (1 client per 1 connection)
502 (can be changed between 0 and 65535)
01 Read Coil Status
02 Read Input Status
03 Read Holding Registers
04 Read Input Registers
05 Force Single Coil
06 Preset Single Register
15 Force Multiple oils
16 Preset Multiple Registers
FC6A Series MicroSmart Device
*1
Communication
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)
- -O T C
LL IN NE YPE OMMUNICATION
Modbus TCP Server
*2
M FC9Y-B1730
ANUAL
Applicable
Function Code
1,5,15
2
4
3,6,16
3
3,6,16
3