FUTEK IPM500 (D500) Digital Display - Manual (Page 11)

Press Menu
Select Key
Press Digit Select
Key
Press Value Select Key
_00 000U
RTS mode
0 Normal non-latching RTS
1 Single transmission, latching RTS
_000 00U
Termination characters
0 Only at end of all items
1 At end of each item
Ser 3 .
(continued)
_0000 0U
Data sent in continuous
mode
0 All active items
1 Item #1 only
2 Item #2 only (if active)
3 Item #3 only (if active)
4 Peak only
5 Displayed item
6 Valley only
7 All active items + Peak
___ 000U
Modbus* ASCII gap timeout
0 1 sec
1 3 sec
2 5 sec
3 10 sec
___0 00U
Serial protocol
0 Custom ASCII
1 Modbus RTU
2 Modbus ASCII
Ser 4 .
Serial Setup 4
___00 0U
Parity
0 None
1 Odd
2 Even
_ Addr
Modbus Address
___ 000 ___000 ___000
Select digit to flash.
___ 158
Select 0 thru 9 for flashing digit. Address
range is 1 to 247.
5
. RS232 & RS485 COMMUNICATION PROTOCOLS
6.1 SERIAL COMMUNICATION FORMAT
The serial communication format for both RS232 and RS485 is the following:
Mode ................ Full Duplex (Separate transmit and receive lines) and Half Duplex (RS485 only)
Baud Rate ......... 300, 600, 1200, 2400, 4800, 9600, 19200 selectable by front panel Menu item
“Ser 1”, Sub-menu item “Digit 4” for DPM, "Digit 5" for counter.
Parity ................ None
Word length...... 8 data bits
Stop bit ............ 1
6.2 MEASUREMENT DATA FORMAT
The basic measurement data format consists of 8 ASCII characters for the DPM, such as
+999.99 and 9 characters for the counter, such as +9999.99, where is the
carriage return character. The first character is always a plus or minus sign. A decimal point is
always furnished, even when it follows the last digit.
Adding a Line Feed Character to the Basic Format
Printers and other devices that receive the measurement data may require a line feed character
following the . The line feed character may be selected in “Ser 2”.
Adding a Coded Data Character to the Basic Format
It is possible to add a coded character from A to H to the data string according to the following
table to indicate the alarm and overload status of the device. If used, this character precedes
the , so it is the last printable character in the string. With the optional and coded
character selected, the data string will consist of 10 characters for the DPM +999.99A
and 11 characters for the counter +9999.99A.
Alarm Status No Overload Overload
Neither Alarm set
Alarm 1 set only
Alarm 2 set only
Both Alarms set
A
B
C
D
E
F
G
H
For example, a coded character “G” indicates that Alarm 2 only is set, that the DPM is in the
overload condition, and that zero blanking has been selected. This information is useful when
data is supplied to a computer for listing and analysis, or when data is supplied to a Remote
Display in a Master-Slave configuration.
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