HW-G Instruction Manual Page 57
HW-G OZIM v1a
17.2 RS-422 / RS-485 / Relay output (OP-04)
Replacing RS-232C interface with this option, the RS-422/ RS-485 interface can connect
up to 16 scales and control them from a computer.
The RS-422/ RS-485 interface has the following two modes.
Stream mode
Outputs data countinuouslly.
Command mode
Controls the scale using commands from a computer.
It is necessary to set the parameters of the “Baud rate (
f4
)”, “
Output mode (
f5
)”, “ Format (
f15
)” in the function table in advance.
Transmission systemEIA RS-422/ RS-485
Transmission
Asynchronous, bi-directional, half-duplex
Data format
Baud rate: 2400, 4800, 9600 bps
Data:
7 bits
Parity:
1 bit, Even
Start bit
1 bit
Stop bit
1 bit
Code
ASCII
Terminator
CR LF (CR: 0D[H], LF: 0A[H])
Address
01 ~ 99
Address parameter (
f10
) of function table.
Relay
Solid-state-relay
Maximum voltage
DC50V
Maximum current
DC100mA
Maximum resistance 8
Ω
Mating connector
TM:BLA9 (of accessory pack)
Pin connections
Pin No. Signal name
Direction
Description
1
SDA
Output
RS-422 transmission A terminal
2
SDB
Output
RS-422 transmission B terminal
3
RDA
Input
RS-422 receive A terminal
Input / Output
RS-485 transmission/ receive A
terminal
4
RDB
Input
RS-422 receive B terminal
Input / Output
RS-485 transmission/ receive B
terminal
5
TRM -
120
Ω
terminator
6
HI
Output
Relay output of HI
7
OK
Output
Relay output of OK
8
LO
Output
Relay output of LO
9
COM -
Relay common terminal
Summary of Contents for HW-100KGL
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