Campbell Scientific LR4 Four Channel Latching Relay Module - Manual (Page 18)

LR4 Four Channel Latching Relay Module
9. Firmware Update Procedure
FIGURE 7. Program Mode Jumper
The firmware on the LR4 can be updated by using a terminal program such as
Hyperterminal. The LR4 contains an internal female DB-9 connector to
facilitate an RS-232 connection.
Firmware updates should only be performed at an appropriate workstation with
static control procedures in place. Failure to follow the procedures may cause
damage to the device.
• Ensure that the LR4 is completely disconnected.
• Remove the cover of the LR4 by removing the two Philips screws.
• Locate the program mode jumper and move the jumper from Run to Prog
as shown in Figure 7.
• Connect the LR4 to power and ground only (make no other connections as
doing so may interfere with programming).
• Once power is applied, the status LED should remain on.
• Connect the computer to the RS-232 connector inside the LR4.
• Set up Hyperterminal or the communications program that is being used as
follows:
• Baud Rate: 38400
• Data Bits: 8
• Parity: None
• Stop Bits: 1
• Flow control: XON/XOFF
• 25-ms line delay (under ASCII setup)
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