Micromod MOD: 30ML and Modcell Maintenance for 2001N, 2002N, and 1800R - Manual (Page 56)

MOD30ML and Modcell Maintenance Manual
COMMUNICATIONS
does not match the address of any instrument on the ICN.
• Note the number of each ICN. The ICNs are numbered 0 through 7 from left to
right. Earlier model links may number the ICNs 1 through 8 on the chassis, though
this address scheme is not used in the Application Builder. The ICN number is not
related to the ICN interface board address: they can have the same numerical
value.
• Note the link switch settings. The settings determine the communication
parameters for the serial port. Factory settings provide the following values:
•
Odd parity, 8data bits, and one stop bit
• 9600 baud
• Clear-to-send (CTS) permanently enabled
• RS-232 transmission standard
5. If a 1731N Mini Link or 1733N Mini Link/External is being used, verify the setup:
• The mini links provide the required interface for one ICN, and an optional
interface board supports a second ICN. Each ICN can be connected to as many
as 15 instruments. The interface board and instruments on each ICN must have
unique addresses. The hexadecimal address switch on the interface board is
factory set at 0; this allows addresses 1-15 ($1-$F) to be assigned to the
instruments via the Device Setup display on the instrument front panel. The
interface board can be assigned any address (1-15). Be sure the interface board
address does not match the address of any instrument on the ICN.
• On the 1731N link which is installed in the computer chassis,ensure that the link
address and interrupt settings are different from other ports in the PC.
• Note the number of each ICN. If a single ICN is connected its number is 0. The
optional second ICN is number 1. The ICN number is not related to the ICN
interface board address: they can have the same numerical value.
• Note the link jumper locations. The locations determine the communication
parameters for the two serial ports. Factory settings provide the following values:
• 9600 baud (19200 for the second port on the Mini-Link External.
• No parity, 8data bits, 1 stop bit (these parameters are not configurable)
• Clear-to-send (CTS) ignored
• RS-232 transmission standard (not configurable)
6. Verify that a wire is connected from the common of the ICN connector on the link
interface board to terminal 1 (common) on the instrument. Be sure this wire is not
connected to earth or chassis ground. Note that the common terminal on the mini link
ICN connector is labeled with a ground symbol; This is signal ground (or common), not
earth or chassis ground.
7. Apply power to the equipment. If the network contains a Mini Link, allow at least 30
seconds for the link to initialize.
8. Verify that the ICN has proper termination. The most common termination method uses
the 2030F ICN terminator connected to the terminal block of one instrument on the
network.
NOTE: Successful communication with any instrument on the network indicates that the ICN
is properly terminated and functioning correctly. Another method of verifying proper
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