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14 Serial Communications
14-44
CP2E CPU Unit Software User’s Manual(W614)
Modbus has the following four common data models.
CP2E allocates each area of these data models to an I/O Memory area.
z
CP2E Fixed Allocations
The following table gives the relationship between Modbus data model and CP2E I/O memory of CP2E
CPU unit.
Additional Information
Addresses in Modbus data models start from 1, but addresses specified in Modbus-RTU com-
mands and addresses in the CP2E CPU Unit start from 0. Refer to the above table when speci-
fying addresses in applications.
14-7-4 Operation Specifications
Modbus data model
Data type
Read/Write
CP2E CPU unit
I/O Memory allcation
Discrete Inputs
Bit
read
None
Coils
Bit
read
Auxiliary Area (W)
Input Registers
Word (16 bit)
read/write
None
Holding Registers
Word (16 bit)
read/write
Data Memory (D)
Modbus data model
Modbus address
Address specified
in Modbus-RTU
commands
Corresponding CP2E I/O
Memory address
Discrete Inputs
---
---
---
Coils
1 to 204
8
0 to 2047
W0.00 to W127.15
Input Registers
---
---
---
Holding Registers
1 to 4096
0 to 4095
CP2E E
-type
D0 to D4095
1 to
8
192
0 to
8
191
CP2E S
-type
D0 to D
8
191
1 to 16
38
4
0 to 16
383
CP2E N
-type
D0 to D16
383
Modbus Data Models
CP2E CPU Unit
I/O Memory
Modbus-RTU Command
Read Coils
Discrete
Inputs
None
Auxiliary Area
(W)
Coils
0
1
Read Holding Registers
Write Single Register
Write Multiple Coils
Write Multiple Registers
Input
Registers
None
Holding
Registers
Data Memory
(D)
0
1
2
:
0
1
2
:
0
1
2
:
0
1
2
:
:
0
1
2
:
2
Содержание SYSMAC CP Series
Страница 1: ...USER S MANUAL Cat No W614 E1 01 SYSMAC CP Series CP2E E D CP2E S D CP2E N D CP2E CPU Unit Software ...
Страница 3: ......
Страница 32: ...1 Overview 1 4 CP2E CPU Unit Software User s Manual W614 ...
Страница 44: ...3 CPU Unit Operation 3 8 CP2E CPU Unit Software User s Manual W614 ...
Страница 116: ...6 I O Allocation 6 8 CP2E CPU Unit Software User s Manual W614 ...
Страница 144: ...7 PLC Setup 7 28 CP2E CPU Unit Software User s Manual W614 ...
Страница 170: ...10 Interrupts 10 14 CP2E CPU Unit Software User s Manual W614 ...
Страница 200: ...11 High speed Counters 11 30 CP2E CPU Unit Software User s Manual W614 ...
Страница 272: ...12 Pulse Outputs 12 72 CP2E CPU Unit Software User s Manual W614 ...
Страница 278: ...13 PWM Outputs 13 6 CP2E CPU Unit Software User s Manual W614 ...
Страница 460: ...18 Programming Device Operations 18 28 CP2E CPU Unit Software User s Manual W614 ...
Страница 576: ...Revision 2 CP2E CPU Unit Software User s Manual W614 ...
Страница 577: ......