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4.1 MECHATROLINK-III Interface
4.1.1 Basic Specifications
4-2
4.1
MECHATROLINK-III Interface
This section provides the MECHATROLINK-III interface specifications.
4.1.1
Basic Specifications
This section provides the basic MECHATROLINK-III specifications.
*
Set on a DIP switch.
MODE = OFF: M-III standard I/O profile
MODE = ON: M-II-compatible profile
4.1.2
Supported Commands
The commands that are supported depend on whether the M-III standard I/O profile or the M-
II-compatible profile is selected. The commands for when the M-III standard I/O profile is
selected and when the M-II-compatible profile is selected are given in the following tables.
Supported M-III Standard I/O Profile Commands
The following table lists the commands that are supported when the M-III standard I/O profile is
selected.
*
Communications phase symbols:
: Execution possible,
Δ
: Ignored,
×
: Command error,
−
: Undefined data
Item
Description
Type Slave
only
Slave Type
Multi-slave (4 stations max.)
Supported Profile
*
MECHATROLINK-III standard profile
Station Addresses
03 to EF hex (Set on rotary switches.)
Number of Transmission Bytes
16, 32, 48, or 64 bytes
Minimum Transmission Cycle
250
μ
s
Supported Transmission Cycles
250
μ
s, 500
μ
s, 750
μ
s, 1 ms, or 1.5 ms to 8 ms (in increments of
0.5 ms)
Minimum Communications Cycle
M-III standard I/O profile: 250
μ
s
M-II-compatible profile: 500
μ
s
Supported Communications Cycles
M-III standard I/O profile: All of the communications cycles are sup-
ported.
M-II-compatible profile: 500
μ
s or higher (multiples of 500
μ
s)
Supported Communications Modes Event-driven communications and cyclic communications
Profile
Command
Code (Hex)
Command
Operation
Communications
Phase
*
1
2
3
Common
Commands
00
NOP
No Operation
−
−
01
PRM_RD
Read Parameter
−
−
02
PRM_WR
Write Parameter
−
−
03
ID_RD
Read ID
−
−
04
CONFIG
Setup Device
−
−
05
ALM_RD
Read Alarm/Warning
−
−
06
ALM_CLR
Clear Alarm/Warning
−
−
0E
CONNECT
Establish Connection
Δ
−
0F
DISCONNECT
Release Connection
−
1B
PPRM_RD
Read Non-volatile Parameters
−
−
Standard I/O
20
DATA_DWA
Asynchronous Data Read/Write
−
−