User manual

Toolbox 32 User Manual 1.47d www.cse-semaphore.com/mykingfisher
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154
Rx ASCII
Comment: A 12-character description.
RTU Number: (1-249) The RTU address assigned to the external ASCII device.
String: Characters to be sent or first local register (#R) where string is stored.
Destination: (#F1 to #F2047) First network float register where received floating point variables are
reported. Specified using a local float register. Note: an LP-1/2/3 stores the data in local registers instead of
network registers.
No. of variables: (1-40) Number of floating point variables contained in the reply message. Can also specify
a local register (#R) that contains the No. of variables setting.
Communicating With An ASCII Device
When using a Tx or Rx ASCII block the RTU should be configured as follows:
• First ensure that the ASCII driver is supported by the type of RTU that is being used and that the latest
firmware and driver are loaded in the RTU (as detailed in protocols.pdf available from www.cse-
semaphore.com/mykingfisher).
• Set the port protocol as ASCII No Parity or ASCII Even Parity in Configuration, Port List. The ASCII
protocol can only be used on MC or LP-1/2/3 ports.
• Set the port baudrate in Configuration, Port List.
• Add the address of the ASCII device to the network list in Configuration, Network List (this must be a
unique address in the RTU network).
Driver Limitations
• Transmit string can not contain any zero bytes.
• Data format must be 8 bits, no or even parity and 1 stop bit.
• There is no validity checking of the reply message by the driver.
• Maximum length of a transmit string is 200 bytes.