Instruction manual

CI-ControlWaveLP Installation / 2-31
Figure 2-30 - Local View Advanced Communication Parameters Menu
"Would you like to use RTS/CTS signals?"
If your communication line uses Ready to Send (RTS) / Clear to Send (CTS) signals (not
to be confused with ControlWave variables used for this purpose), click on 'Yes'.
"Front Pad", "Back Pad"
These fields specify the number of null characters to insert at the beginning (front) or
ending (back) of a message. Null characters may be useful in situations where there
may be a momentary delay, which could cause the start of a message to be missed, for
example, while a radio link is being activated. To determine the delay caused by null
packing, perform the following calculation:
seconds of delay = (number of null characters x 10) / baud rate
2.5.2.2 Using HyperTerminal to Upgrade ControlWaveLP Firmware
A null modem cable (see Figure 2-5) must be connected to COM1 of the ControlWaveLP
and to any RS-232 port on the associated PC. The PC’s RS-232 port used for this purpose
must be set to run at 115.2 Kbaud. ControlWaveLP CPU Switch SW2, positions C and D
must be set ON (see Table 2-3).
1. If not already running, apply power to the associated PC.
2. Start the HyperTerminal program on the PC. Note: HyperTerminal is a Windows 95 (or
newer) application utility program. If using HyperTerminal for the first time, set the
communications properties (for the PC Port being utilized) via the Properties Menu as
follows: Bits per second: = 115200, Data bits: = 8, Parity: = None, Stop bits: = 1, and Flow
control: = None and then click OK.
3. Set CPU Switch SW2 positions C to ON (ON = Force Recovery & FLASH Download
Enabled).
4. Apply power by turning the PSSB’s ON/OFF Switch to the ON (‘I’) position. The
resident BIOS will initialize and test the hardware, this process is referred to as POST
(Power On Self Test).