PfofiBus Gateway
7.3 Setting the Gateway Unit and PLC Master
For the Gateway Unit to be able to communicate with the master station, the settings specified below must
be performed.
The following items must be consistent between the master station and the Gateway Unit.
{
: ON
X: OFF
Item
Gateway Unit setting
PLC master setting
Baud rate
Set automatically according to
the corresponding setting of
the host PLC master
Baud rate setting
switch
Node
address
Node address setting
switch
Node address setting switch
Mode setting switch SW1
Occupied area setting
No.
Output
(bytes)
Input
(bytes)
4 3 2 1
1 X X X X
52
28
Direct numerical specification mode,
4 axes
2 X
{
X X
76
40
Direct numerical specification mode,
6 axes
3
{
X X X 100
52
Direct numerical specification mode,
8 axes
4
{
{
X
{
124 64
Assignments
Direct numerical specification mode,
10 axes
5
{
{
X X 196
100
Direct numerical specification mode,
16 axes *
6 X X
{
X 48
48
Position number specification mode,
16 axes
{
7 X X X
160
160
Command specification mode, Large
{
{
8 X
X
128
128
Command specification mode, Middle
{
9
X X
{
64
64
Command specification mode, Small
* When connecting 10 or more axes, the PLC must be the S7-400 or S7-318-2 (Siemens).
(1) Setting the ProfiBus baud rate
[1] Gateway unit side
The baud rate need not be set, because it is set automatically according to the corresponding
setting of the host PLC master.
[2] PLC
master
side
Use the baud rate setting switch on the master unit. (Refer to the PLC operation manual.)
(2) Node address
[1] Gateway unit side
Use the node address setting switch. (Refer to 2.3.)
Normally this switch is set to 3 or greater.
[2] PLC
master
side
Use the node address setting switch. (Refer to the PLC operation manual.)
Normally this switch is set to 2.
(3) Setting the gateway unit mode
Set the operation mode of the gateway unit using the mode setting switch SW1. (Refer to 2.3.)
This setting determines the I/O sizes of the gateway unit. Accordingly register the mode as part of the
slave I/O assignment settings in the master. (Refer to 7.4.)
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