Instruction manual

4. SETTING
IMR01H02-E3
10
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Description of each parameters
Symbol Name Setting range Description Factory
set value
(Add)
Device address
(Slave address)
0 to 99
(See P.16, 17)
Set it not to duplication in multi-
drop connection.
If the slave address is set to 0 in
Modbus, two-way communication
cannot be performed.
0
(bPS)
Communication
speed
240: 2400 bps
480: 4800 bps
960: 9600 bps
1920: 19200 bps
Set the same communication
speed for both the MA900/MA901
(slave) and the host computer
(master).
960
(bIT)
Data bit
configuration
See
data bit
configuration
table
Set the same data bit configuration
for both the MA900/MA901
(slave) and the host computer
(master).
8n1
(InT)
Interval time * 0 to 250 ms The MA900’s or MA901’s
interval time must match the
specifications of the host
computer.
10
Data bit configuration table
Set value Data bit Parity bit Stop bit
(8n1) 8 Without 1
(8n2) 8 Without 2
(8E1) 8 Even 1
(8E2)
1
8Even2
(8o1) 8 Odd 1
(8o2)
1
8 Odd 2
(7n1)
1
7 Without 1
(7n2)
1
7 Without 2
(7E1)
1
7Even1
(7E2)
1
7Even2
(7o1)
1
7 Odd 1
(7o2)
1
7 Odd 2
1
When the Modbus communication protocol selected, this setting becomes invalid.
* The interval time for the MA900/MA901 should be set to provide a time for host computer to finish
sending all data including stop bit and to switch the line to receive data. If the interval time between
the two is too short, the MA900/MA901 may send data before the host computer is ready to receive
it. In this case, communication transmission can not be conducted correctly. For a successful
communication sequence to occur, the MA900’s or MA901’s interval time must match the
specifications of the host computer.
No setting can be changed when “1: Lock” is selected by the lock level 1.
For the lock level 1, see the Instruction Manual (IMR01H01-E
#
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Setting range of
RKC communication
Setting range of
Modbus