Dynapro Technologies Dynapro ET TCS, Application Developer'S Manual

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The Parity Enable command enables or disables parity checking and generation. (For an
explanation of parity checking, see Parity Bit, in Chapter 2.)
Parity checking and generation are enabled or disabled by setting the Parity Enable parameter on
the Setup Screen to one of the following values:
•
off
•
on
•
ignore
When Parity Enable is set to "on," parity checking and generating are enabled. If the Parity Sense
setting is "even," the TCS transmits even-parity data by appending a parity bit and expects
received data to have even parity. If the TCS receives data that has odd parity, the data is
displayed as a parity error (
P
E
). If the Parity Sense setting is "odd," the TCS transmits odd-parity
data by appending a parity bit and expects received data to have odd parity. If the TCS receives
data that has even parity, the data is displayed as a parity error (
P
E
).
When Parity Enable is set to "ignore," parity checking is disabled, but even or odd parity
generation is enabled. If the Parity Sense setting is "even," the TCS transmits even-parity data by
appending a parity bit and expects received data to have a parity bit. However, the TCS does not
check the parity of the received data. If the Parity Sense setting is "odd," the TCS transmits odd-
parity data by appending a parity bit and expects received data to have a parity bit. However, the
TCS does not check the parity of the received data.
When Parity Enable is set to "off," parity checking and generation are disabled. The TCS does
not transmit a parity bit and does not expect parity bits in the data it receives. A received code
with an appended parity bit is displayed as a framing error
(
F
E
).
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Off. (Parity checking and generation are disabled.)
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The user issues the Parity Enable command by entering the Setup Screen and setting the Parity
Enable parameter to the desired value using touchkeys or the optional keyboard.
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None. (This is a local command only.)