Session Access
Initiate communication following power-on, with the SYS REQ command;
The SYS
REQ command instructs the controller to wait for a call from the host
The operator options entered for link initialization, are saved and used to re-establish
communication following network link error recovery without further operator action.
Only the first parameter listed below is required. The
Network Address
is only required if
you want the 3494 to answer calls that originate from that address.
Password
is only
required if you want the 3494 to answer calls that include this password. If this is required,
the password must also be included in the host configuration.
1. Enter [A] on the first space in the system request line.
Only this character is
essential. All other characters (detailed below) are optional.
2. To enter a network address:
(Enter only if it was not preconfigured in the controller
setup).
When this parameter is entered, the controller answers only calls originating
from that address.
ATTENTION:
If the parameters Network Address and Password are preconfigured in the
Controller setup, they do not have to be entered in the System Request line.
Type [N] followed by the host Network Address.
Value = from 1 to 15 numeric characters.
3. To enter a password:
(Enter only if it was not preconfigured in the controller setup). When this parameter is
entered, the controller answers only calls that include this password.
Type [X] followed by a password.
Password value = [1 to 8 alphanumeric characters].
4
To define a logical channel:
If your network subscription provides more than one logical channel, type [L] followed by
a three character hexadecimal code to identify the logical channel to be used.
Valid logical channel values =
Hexadecimal values [001 to FFF].
If you have PVCs and SVCs in the same network subscript, specify the LP to assure
correct operation.
5. If
Control Negotiation
is enabled, the following options are available:
.
a. Change the packet size - type [P] followed by the new packet size.
Values = [064, 128, 256 or 512].
b. To change the packet window size - type [W] followed by a two digit code.
5
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