Communications Installation - Connecting the HC900 Controller to a PC with the Designer Software
132 HC900 Process Controller Installation and User Guide Revision 19
06/14
Zoom 56K Dualmode External Modem
Step Action
1 Connect the modem to a PC. If your PC’s RS-232 port has a 25-pin connector, use a DB-25
male to DB-25 female RS-232 cable. If your PC’s RS-232 port has a 9-pin connector, use a
DB-25 male to DB-9 female modem cable.
2 Connect power to the modem.
3 Power up the modem.
4 Run a serial communication port program such as Hyperterminal.
5 Within the communication program, select the port to which the modem is connected.
6 Configure the port to these settings:
baud rate = 1200, 2400, 4800, 9600, 19200, 38400, 57600 (Must match Baud Rate
configured in HC900 Controller)
data bits = 8
parity = none
stop bits = 1
flow control = none
7 In the program's terminal window, restore factory defaults by keying-in the following command
string:
AT &F0
Then, press the ENTER key.
8 In the program’s terminal window, key-in the following command string:
AT E1 Q0
Then, press the ENTER key. The Modem should respond with
.
9 Key-in the following command string:
AT &Y0 &C0 &D0 &R1 &S0 &K0 S0=1
Then, press the ENTER key. The Modem should respond with
.
10 Key-in the following command string:
AT E0 Q1 &W0
Then, press the ENTER key. The Modem will not respond.
11 Power down the modem and disconnect it from the PC.
12 Connect the modem to the?
13 Connect the modem to a telephone jack.
14 Power up the modem and the HC900 Controller.
15 On a remote computer, run Designer software.
16 Set up the PC software to dial the HC900 Controller.
17 Use the PC software "Loop-back" feature to verify that communications are established with
the remote HC900 Controller.
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