HV-WP/HW-WP Series
Page 59
17.3. OP-04, Options
17.3. RS-422/ RS-485 / Relay Output (OP-04)
Replacing the standard 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 continuosly.
Command mode Controls the scale using commands from a computer.
Set the parameters for the "Baud rate (
f4
)", " Output mode (
f5
)", "Address
(
f11
)", " Format (
f15
)", in the function table, in advance.
Transmission system
EIA 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: 0Dh, LF: 0Ah)
Address
01 ~ 99
Address parameter (
f11
) of the function table.
Relay
Solid-state-relay
Maximum
voltage
DC50V
Maximum
current
DC100mA
Maximum resistance
8
Ω
Adaptable connector
TM:BLA9 (of accessory)
Pin
connections
Pin No. Signal name Direction
Description
A
1
SDA
Output
RS-422/485 transmission A terminal
A
2
SDB
Output
RS-422/485 transmission B terminal
A
3
RDA
Input
RS-422/485 receive A terminal
A
4
RDB
Input
RS-422/485 receive B terminal
A
5 TRM
-
120
Ω
terminator
A
6
HI
Output
Relay output of HI
A
7
OK
Output
Relay output of OK
A
8
LO
Output
Relay output of LO
A
9
COM
-
Relay common terminal
A
Summary of Contents for HW-200KV-WP
Page 72: ...Page 70 HV WP HW WP Series MEMO...