Micromod Micro-DCI: 53MC5000 Multi-Loop Process Controller Instruction Manual - Manual (Page 180)

Table 5-14. System Module
Title Definition Atom Data-
point
De-
fault
Baud Rate
This datapoint value designates the baud rate (data transfer rate) of the Datalink network. The
baud rate must be the same for all of the instruments connected to the same Datalink network.
Datapoint values and their corresponding baud rates are as follows:
Value Baud Rate Value Baud Rate
255 28800 9 28800 Example: Entering a 6 or a 253
254 14400 8 14400 in this datapoint selects 9600
N/A N/A 7 19200 baud.
253 9600 6 9600
250 4800 5 4800
244 2400 4 2400
232 1200 3 1200
208 600 2 600
160 300 1 300
N/A N/A 0 110
BR B002 253
No Parity
This datapoint indicates if parity generation and checking should be turned on or off. It is set to
0 for even parity serial byte protocol. It is set to 1 for no parity protocol.
CP L256 0
No Byte
Stuffing
When set to a 1, this datapoint disables the standard F&P communication protocol feature which
inserts a 00 (NUL) byte after every 7EH (SOH) that is not the beginning of a message. (This
permits user written communications software to determine the number of bytes to expect in a
response message.) It must be set to
0 when using F&P communications software or
equipment.
CB L258 0
Datalink
Disable When set to 0 , it permits full Datalink communication capabilities. When set to 1, it disables
Datalink communication capabilities.
DLD L257 0
Initialization
Message
If datapoints A188 and A189 are configured to NON-NULL values, their contents will be
transmitted onto the Datalink network at reset/power-up. Prior to transmitting, a delay based on
the unit’s instrument address is observed. There is a one second delay between the
transmission of datapoint A188 and datapoint A189 contents. Datapoints A188 and A189 can
be configured as two NULL TERMINATED strings up to 10 characters each. For example, to
initialize a Hayes compatible modem to Auto Answer, datapoint A188 would be configured to
appear as follows: A188
L
ATS0=4
C
R
. This seven character string is an Auto Answer command
that directs the modem to respond to calls on the fourth ring. Datapoint A189 is left at all NULL
VALUES for this example.
IMA
IMB A188
A189 NULL
NULL
4 of 6
5-
3
5
Se
ctio
n 5.
Co
nf
igu
rat
ion
Pa
ra
m
e
te
rs