100/180MM DISTRIBUTED GRAPHIC RECORDER: USER GUIDE
Page 141
HA029324
Issue 11 Oct 14
4.3.15 CONNECTIONS (Cont.)
Apply
Discard
Baud Rate
Stop Bits
Parity
19200
1
Select required Baud rate.
Select 1 or 2
Select None, Odd or Even
None
Modbus Slave
Protocol
Link Error Count
0
Reset Error Count
Connection
EIA4XX
Port
Serial 1
Select port
Apply
Discard
Baud Rate
Stop Bits
Parity
Select required Baud rate.
Select 1 or 2
Select None, Odd or Even
Timeout
ms
Enable error code B
Enable Talk Through
Protocol
Link Error Count
Reset Error Count
Connection
Port
Select port
19200
1
None
1000
Modbus Master
0
EIA4XX
Serial 1
CONFIGURATION PARAMETERS
SERIAL PORT
Allows the user to select Serial 1 or Serial 2 port for confi guration. See
fi gure 2.2.2b
for port locations.
LINK ERROR COUNT
A Link error count is provided for every slave. The count is incremented every time there is a framing
error, a parity error or a Cyclic redundancy check (CRC) error. The ‘Reset Error Count’ key is used to reset
the count to zero.
PROTOCOL
ASCII (input), Modbus Slave, Modbus Master can be selected. Master or Slave selections must match the
switch settings for the relevant port, as shown in
table 2.2.2b
.
CONNECTION
Only EIA485 available as transmission standard. Three-wire or Five-wire working is selected by means of
a switch accessed from the rear of the instrument, as described in
section 2.2.2
.
BAUD RATE
Allows a Baud rate to be chosen from a picklist of: 300, 600, 1200, 4800, 9600, 19200, 38400. This value
must be the same for all devices in the serial link.
STOP BITS
Selectable as 1 or 2. This value must be the same for all devices in the serial link.
PARITY
Allows Parity to be chosen from a pick list of: None, Odd, Even. This value must be the same for all de-
vices in the serial link.
DATA BITS
For ASCII (input) protocol only, selectable as 7 or 8. This value must be the same for all devices in the se-
rial link.
Figure 4.3.15b
Serial Communications confi guration menu (Modbus slave)
Figure 4.3.15c
Serial Communications confi guration menu (Modbus
master)
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