Abbreviated Controller Transmission Byte Format
The abbreviated response suppresses the node address and register ID
characters, leaving only the numeric part of the response. The numeric field is
5-6 characters long. If the decimal point is present, the field is 6 characters.
Negative values have a leading minus sign. The data field is right justified with
leading spaces.The end of the response string is terminated with a carriage
return <CR> and line feed <LF>. When print block transmission is finished, an
extra <SP><CR><LF> is used to provide separation between the blocks.
Byte Description
1-6 6 byte data field, 4 bytes for number, one byte for sign, one byte
for decimal point
7 <CR>
8<LF>
9 <SP>(Space). This character only appears in the last line of a print
block.
10 <CR> This character only appears in the last line of a print block.
11 <LF> This character only appears in the last line of a print block.
Example of Full Field Printout of Factory Settings
P48 T48
INP 25.0 TMP 87F
SET 0.0 SET 0F
PWR 47.8% PWR 0.0%
PBD 100.0% PBD 4.0%
INT 40S INT 120S
DER 4S DER 30S
AL1 0.0 AL1 0F
AL2 0.0 AL2 0F
DEV 25.0 DEV 87F
OFP 0.0% OFP 0.0%
RMP 0.0R RMP 0.0R
CRG 1.0G CRG 1.0G
CDB 0.0 CDB 0F
OST 0000 RSP 0F
HCF 0.0A
OST 0101
Troubleshooting Serial Communications
If problems are encountered when interfacing the controller(s) and host
device or printer, the following check list can be used to help find a solution.
1. Check all wiring. Proper polarity of all devices on the serial loop must be
observed. Refer to previous application examples.
2. Check the controller’s communication format in module 6-SC. Make sure
all devices on the serial loop are configured with the same
communication format.
3. Check the requesting device constructed command string format.
4. When sending commands to the controller, an asterisk “*” or dollar sign
“$” must terminate the command. Make sure a carriage return or line feed
does not follow the command terminator.
5. Check the controller’s unit address in module 6-SC. It should be zero if the
address command is not used in the command string for single controller
configurations. In multiple controller configurations, make sure each
controller has a unique unit address.
6. Initiate transmissions from the controller by programming the User Input
for PrNt in module 1-IN for print and programming module 6-SC at PoPt
set INP (input) to YES. As long as the user input is connected to common,
controller data will be sent.
7. With two-way communications or multiple controller configurations,
make sure only one device is communicating at a time.
8. If all of the above has been done, try reversing the polarity of the serial
wires at host device or printer. Some devices have reversed polarity.
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