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EX500 Serial System
5 -4 -1. Address setting switch ( SW1, 2 )
These switches set node address. The setting is shown in Table 1.
5 -4 -2. Data rate setting switch ( SW3 )
This switch set data rate. The setting is shown in Table 2.
The factory default address and data rate are 63 and 125 k bit / sec. respectively.
SW1
SW1
0
0
0
6
6
9
5 -5. I/O memory map
The GW Unit can control 128 input / output points in total. Regardless of I/O points of the equipment,
it always occupies each data memory area for 64 inputs and 64 outputs.
Once the address is assigned in the GW Unit, every port then corresponds to a specific "Word" respectively.
So "Word (n)" always corresponds to COM A, "Word (n+1)" corresponds to COM B, and so on.
Ex.) n = 1
In case of the input data, the sensor signal data of the Input Manifold which was connected with
the COM A port, occupies "Word1" of the I/O memory mapping.
If a sensor signal is stored in the "0 bit" of the Input Manifold, it becomes like the Figure below.
In the same way, in the case of the output data, the contents displayed in "Word1" of the
I/O memory mapping is output by the COM A port.
( m,n=0 - )
Word ( n )
Word ( n+1 )
Word ( n+2 )
Word ( n+3 )
！ ！ ！ ！
CAUTION
Read carefully the user manual of PLC which is used as a master.
The method of PLC setup, reading from or writing to memory differ from one PLC manufacturer to another.
X10
X1
SW2
SW2
NODE ADDRESS
0
1
2
|
3
4
|
9
Table 1
Branch
connector
COM A
COM B
COM C
COM D
:
:
:
:
0
1
2
|
63
PGM
When PGM mode is chosen, the address
and data rate are set through network.
Data ( 2 byte )
MSB
LSB
MSB
15
8 7
Byte (m+1)
Byte (m+3)
Byte (m+5)
Byte (m+7)
- 24 -
SW3
SW3
DATA RATE
0
125 k bit / sec.
1
250 k bit / sec.
2
500 k bit / sec.
3
|
PGM
9
Table 2
LSB
0
Byte (m)
1
Byte (m+2)
Byte (m+4)
Byte (m+6)
EX## - OME0008
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