3 ETHERNET INTERFACE MODULE REPLACEMENT
3 - 7
(1) Comparison between A/AnS series and Q series
: Compatible, : Partial change required, ×: Incompatible
3.3 Function Comparison
Item
Description
Compat-
ibility
Precautions for replacement
A series AnS series Q series
AJ71E71N3-T
AJ71E71N-B5
AJ71E71N-B2
A1SJ71E71N3-T
A1SJ71E71N-B5
A1SJ71E71N-B2
QJ71E71-100
QJ71E71-B5
QJ71E71-B2
Initial processing
The state in which data communications with an external device is possible is
set.
Set in the GX Developer network
parameters.
*1
(Delete the sequence program of
the section corresponding to the
function.)
(Refer to Section 3.9.)
Open processing
The communications line for performing data communications with external
devices is connected.
Change to a sequence program
that uses the dedicated
instructions (OPEN, CLOSE).
*5
(Refer to Section 3.9.)
Communications using fixed
buffer
(procedural, nonprocedural)
The fixed buffer on the Ethernet interface module is used to send/receive the
desired data between the programmable controller CPU and external devices.
Change to a sequence program
that uses the dedicated
instructions (BUFSND,
BUFRCV).(Refer to Section 3.9.)
Communications using random
access buffer
Data is read/written to the random access buffer of the Ethernet interface
module from multiple external devices.
Change the sequence program
as buffer memory assignments
differ. (Refer to Section 3.6.2.)
Read/write communications of
programmable controller CPU
internal data
Programmable controller CPU data is read/written to and from external devices.
Some of the commands and
device ranges are restricted.
(Refer to Section 3.7.)
Broadcast communication
Data is sent/received to all external devices on the same Ethernet network as
the Ethernet interface module by UDP/IP-based data communications.
(broadcast)
Communications while the
programmable controller CPU is
stopped
Data communications can be continued when the programmable controller
CPU enters a stop state. (during passive open processing)
Set in the GX Developer network
parameters.
*2
(Delete the sequence program of
the section corresponding to the
function.)
Router relay function Data communications is performed via a router and a gateway.
Delete the sequence program of
the section corresponding to the
function, and set in the GX
Developer network parameters.
*3
Set in the GX Developer network
parameters.
*3
(Delete the sequence program of
the section corresponding to the
function.)
Existence check of external
device
Whether or not the external device is operating normally after the connection is
established (in open processing) is checked.
Change to a sequence program
that uses the dedicated
instructions (OPEN).
*5
Communications using pairing
open
The connection is opened with connection for reception and
connection for transmission as a single pair. (for fixed buffer communications)
Change to a sequence program
that uses the dedicated
instructions (OPEN).
*4*5
Unit of timer set values for data
communications
Set the unit (500 ms/2 s) of timer values Fixed to 500 ms
Set in the GX Developer network
parameters.
(Delete the sequence program of
the section corresponding to the
function.)
The unit of timer set values is 500
ms.