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FS-8700-103_ATMI_TGM_Serial Manual Page 3 of 28
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldserver.com
Tel: (408) 262-2299 Fax: (408) 262-9042 Toll_Free: 888-509-1970 email: support@fieldserver.com
1. ATMI TGM Serial Driver Description
The ATMI-TGM driver allows the FieldServer to transfer data to and from devices over RS-232
using the ATMI-TGM printer port protocol.
This driver connects to an ATMI TGM device using a serial connection. One device may be
connected per FieldServer port. (This limitation exists because the protocol is node-less; that is,
messages do not contain information about the node and thus messages from different TGM
devices could not be distinguished if they were connected on the same port.)
The driver reports Gas and sensor readings and Gas alarm / warning status. The driver reports
TGM module malfunctions.
The driver is a client only driver.
When reporting port and sensor data, the driver reports the gas name by setting a gas name
index value. The index value is obtained from a list of gas names / index values hard coded into
the driver. The list may be extended and/or modified using the configuration by using
appropriate entries in the configuration CSV file. The driver reports a second gas name index
value based on reading the TGM calibration report. When the report is read each gas is
allocated an identifier value based on the gas’s position in the configuration report.
The driver does not provide emulation of a TGM device and thus may not be used as a server.
It is not possible to use this driver to write to the TGM device.
Max Nodes Supported
FieldServer Mode Nodes Comments
CLIENT 1 ONLY 1 SERVER NODE ALLOWED PER PORT.
SERVER 1 Server capability not provided.