Red Lion GEMINI 52 - Manual (Page 28)

RECEIVING DATA FROM THE GEMINI 5200
Data is transmitted from the Gemini 5200 when a “Transmit Value” or
“Transmit per Print Options” command is sent to the unit, or when the “PRINT
REQ.” terminal is activated. The Gemini 5200 can transmit 7 values: display
channel A, B and C, Presets 1 and 2, and Scale Factors A and B. A list of the
abbreviations used when the Gemini 5200 transmits the values are shown below.
CTA - Rate Display A Value
CTB - Rate Display B Value
CTC - Display C Value
PS1 - Preset 1
PS2 - Preset 2
SFA - Scale Factor A
SFB - Scale Factor B
A typical transmission, with the “PR. ID” (Print ID) switch in the up position,
is shown below.
The first two digits transmitted are the unit address followed by two blank
spaces. If the unit address is 0, the first locations will be left blank. The next three
letters are the abbreviation for the mnemonic value followed by one blank space.
The actual values are transmitted last. Negative values are indicated by a “-”
sign. For positive values, the “+” sign is not transmitted. Overflowed display
values are shown by an asterisk preceding the most significant digit of the value.
The decimal point position will “float” within the data field depending on the
actual value it represents.
For peripheral control purposes, a single line transmission will have a
attached to the end of the above string. For a “T” command or each line of a block
transmission, only the above character string is sent. For the last line of a block
transmission,aisattachedtotheendoftheabovecharacterstring.
An example of a typical serial transmission:
3 CTB 1234.56 < CR> < LF>
If the “Print Request” terminal initiates the transmission, a 400 msec delay is
inserted before the transmission to keep multiple transmissions from
overrunning the printer.
When the Print ID switch is in the down position, the unit will not transmit the
characters before the data value (address, Value ID, spaces) or the 400 msec
printer delay. The same above value when transmitted with the “PR.ID” switch
in the down position, is transmitted as:
1234.56 < CR> < LF>
Note: When using the Gemini with a printer, with the “Print ID” switch in the down
position,someprintersmaynotwork,sincetheprinterdelayisnottransmitted.
PRINT OPTIONS
The various Print Options are used mainly in conjunction with a printer and the
Print Request Terminal. They provide a choice of Gemini 5200 data values to be
printed when either the Print Request Terminal is activated or the “Transmit per
Print Options” (P) command is sent to the Gemini 5200. The various Print
Options available are:
A. Print Rate Display A
B. Print Rate Display B
C. Print Display C
D. Print Display A, B, & C
E. Print Display C, Presets 1 & 2, and Scale Factors A & B
F. Print Display B, Presets 1 & 2, and Scale Factors A & B
G. Print Display A, Presets 1 & 2, and Scale Factors A & B
H. Print Display A, B, & C, Presets 1 & 2, and Scale Factors A & B
A typical print-out is shown below. The Print Options are selected by setting
S3, S4 and S5 on the Serial DIP Switch. See “Current Loop Installation” section
for the various switch settings.
1 CTA 000054
1 PS1 000100
1 PS2 000200
1 SFA 01.0000
1 SFB 02.5000
-26-