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6.7 MODULE 7 - S
ERIAL
C
OMMUNICATIONS
P
ARAMETERS
(
)
PARAMETER MENU
This module can only be accessed if a Serial Communications Card is installed.
* Only appears if the Real-Time Clock Card is installed.
Module 7 is the programming module for the Serial Communications
Parameters. These parameters are used to match the serial settings of the meter
with those of the host computer or other serial device, such as a terminal or
printer. This programming module can only be accessed if an RS232 or RS485
Serial Communications card is installed.
This section also includes an explanation of the commands and formatting
required for communicating with the meter. In order to establish serial
communications, the user must have host software that can send and receive
ASCII characters. For serial hardware and wiring details, refer to section 4.5
Serial Communication Wiring.
This section of the PTC900/PTC901 bulletin replaces the bulletin shipped
with the RS232 and RS485 serial communications plug-in cards. Discard the
separate bulletin when using those serial plug-in cards with the
PTC900/PTC901. Also, this section does NOT apply to the Modbus
communication cards. For details on the operation of the Fieldbus cards, refer
to the bulletin shipped with each card.
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«
BAUD RATE
Set the baud rate to match the other serial communications equipment on the
serial link. Normally, the baud rate is set to the highest value at which all the
serial equipment are capable of transmitting and receiving data.
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«
DATA BITS
Select either 7- or 8-bit data word lengths. Set the word length to match the
other serial communications equipment on the serial link.
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«
PARITY BIT
This parameter only appears when the Data Bits parameter is set to a 7-bit
data word length. Set the parity bit to match that of the other serial
communications equipment on the serial link. The meter ignores parity when
receiving data and sets the parity bit for outgoing data. If parity is set to , an
additional stop bit is used to force the frame size to 10 bits.
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«
METER ADDRESS
Enter the serial meter (node) address. With a single meter, an address is not
needed and a value of zero can be used. With multiple meters (RS485
applications), a unique 2 digit address number must be assigned to each meter.
Addresses 98 and 99 are reserved to configure a unit as a serial real-time
clock master. See Serial Real-time Clock Master Adressing.
to
TST TSP CST CSP
NO
Timer/Cnt Start & Stop Values
StrStp
SO1 SO2 SO3 SO4
NO
Setpoint Off/Time-Out Values*
SpNtOF
SP1 SP2 SP3 SP4
NO
Setpoint Values*
SPNt
TIM
NO
RTC Time*
rtC-t
DAT
NO
RTC Date*
rtC-d
CNT
NO
Cycle Counter
C-dSP
TMR
yES
Timer
t-dsp
MNEMONIC
FACTORY
PARAMETER
DISPLAY
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«
ABBREVIATED PRINTING
This parameter determines the formatting of data transmitted from the meter
in response to a Transmit Value (T) command or a Block Print Request (P)
command. Select
for a Full print transmission, which consists of the meter
address, mnemonics, and parameter data. Select
for abbreviated print
transmissions, consisting of the parameter data only. This setting affects all the
parameters selected in the
PRINT OPTIONS
. (Note: If the meter address is 00,
the address will not be sent during a Full transmission.)
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«
PRINT OPTIONS
This parameter selects the meter values transmitted in response to a Print
Request. A Print Request is sometimes referred to as a block print because more
than one parameter can be sent to a printer or computer as a block.
Selecting
displays a sublist for choosing the meter parameters to appear
in the block print. All parameters entered as
in the sublist will be
transmitted during a block print. Parameters entered as
will not be sent.
*
These values are plug-in card dependent.
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«
PTC901: REAL-TIME CLOCK PRINT FORMATTING
This parameter determines the formatting of the Real-Time Clock (RTC)
values transmitted from the meter in response to a Transmit Value (T) command
or a Block Print Request (P) command. This parameter appears only when a
Real-Time Clock plug-in option card is installed.
When
is selected, RTC values are formatted as per the RTC Time and
Date Display Formats programmed in Module 8. The Day of Week value is sent
as a character string.
When
is selected, the meter sends the RTC values as numeric data only.
RTC Time/Date units are separated by a “.”. The Day is sent as a single number
as shown below.
TIME - Hours (24-Hr. format), Minutes, Seconds (HHMMSS)
DATE - Month, Day, Year (mmddyy)
DAY - 1 = Sunday thru 7 = Saturday
