red lion C48C, Инструкция по эксплуатации

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Note: Command identifiers other than those listed should NOT be transmitted.
Otherwise, undefined or unpredictable operation could result.
The command string is constructed by using a command, a value identifier, a
data value if required, and the command terminator(*). The Data value need not
contain the decimal point since it is fixed within the C48C, when programmed
at the front panel. The unit will accept the decimal point, however, it does not
interpret them in any way. Leading zeros can be eliminated, but all trailing zeros
must be present.
Example: If a Preset of 1.0000 is to be sent, the data value can be transmitted as
1.0000 or 10000. If a “1” is transmitted, the Preset will be changed to 0.0001.
The Address command is used to allow a command to be directed to a specific
unit on the Serial Communications Line. When the unit address is zero,
transmission of the Address command is not required. This is done for
applications that do not require more than one unit. For applications that require
several units, it is recommended that each unit on the line be given a specific
non-zero address. If they are given the same address, a command such as the
Transmit Value Command, will cause all of the units to respond simultaneously,
resulting in a communication collision. All units in a multiple unit application
should be given an address other than zero. If a unit has an address of zero, it
will attempt to process any transmissions from the other units as commands.
These transmissions fill up the receive buffer of the unit with an address of zero,
which may produce unpredictable results.
In a multiple unit configuration, an asterisk (2AH) must be sent to clear the
input buffer of all units on the line after a transmit value or print request
command is sent to a specific unit on the line. The C48C will require a
maximum of 50 msec to process the asterisk (*).
The command string is constructed in a specific logical sequence. The C48C
will not accept command strings that do not follow this sequence. Only one
operation can be performed per command string. Below is the procedure to be
used when constructing a command string.
1. The first two to three characters of the command string must consist of the
Address Command (N) and the address number of the unit (1 thru 99). If the
C48C address is zero, the address command and number need NOT be sent.
2. The next character in the command string is the actual command that the unit
is to perform (P, R, S, T, or V).
3. A Value Identifier is next if it pertains to the command. The print command
(P) does not require a Value Identifier.
4. The numerical data will be next in the command string if the Change Value
command (V) is used.
5. All command strings must be terminated with an asterisk * (2AH). This
character indicates to the C48C that the command string is complete.
Below are some typical examples of properly constructed command strings.
Examples:
1. Change Preset 1 Value to 123.4 on the C48C with an address of 2.
COMMAND STRING: N2VA1234*
2. Transmit the Count Value of the C48C unit with an address of 3.
COMMAND STRING: N3TE*
3. Reset Output 1 of the C48C unit with an address of 0.
COMMAND STRING: R1*
If illegal commands or characters are sent to the C48C, the unit will respond
by transmitting an error character “E” (45H) in which case the string must be
re-transmitted. The C48C will not accept a carriage return or line feed as valid
characters.
A (41H) Preset 1 P1
B (42H) Preset 2 P2
C (43H) Preset 3 P3
D (44H) Prescaler PSC
E (45H) Count 1 CT1
F (46H) Count 2 CT2
1 (31H) Output 1 N/A
2 (32H) Output 2 N/A
3 (33H) Output 3 N/A
VALUE IDENTIFIERS MNEMONIC