Filter Clock Prescalers, CMR Byte Defined

Filter Clock Prescalers

Each PSC is an 8-bit programmable modulo-N down counter, driven by the FCK clock. The factor N is downloaded into a PSC from the associated PR low byte register PR0. The PSCs provide the ability to generate independent filter clock frequencies for each channel.

Final filter clock frequency

FFCKn=fFCK/(n+1), where n=PSC=0 to 255

Counter Mode Registers (Write to Control Address)

The counter’s operational mode is programmed by writing a byte into the counter mode registers (CMRs).

CMR Byte Defined

7 6 5 4 3 2 1 0

X	0	1	X	X	X	X	0	Binary Count
X	0	1	X	X	X	X	1 Binary Coded Decimal Count
X	0	1	X	X	0	0	X	Normal Count
X	0	1	X	X	0	1	X	Range Limit
X	0	1	X	X	1	0	X	Non-Recycle Count
X	0	1	X	X	1	1	X	Modulo-N
X	0	1	0	0	X	X	X	Non-quadrature
X	0	1	0	1	X	X	X	Quadrature 1X
X	0	1	1	0	X	X	X	Quadrature 2X
X	0	1	1	1	X	X	X	Quadrature 4X
0	0	1	X	X	X	X	X Select the CMR addressed by X'/Y input
1	0	1	X	X	X	X	X Select both XCMR and YCMR or ZCMR and WCMR
								together

Definitions of count modes

Range Limit. In range limit count mode, an upper and a lower limit is set, mimicking limit switches in the mechanical counterpart. The upper limit is set by the contents of the PR and the lower limit is set to be 0. The CNTR freezes at CNTR=PR when counting up and at CNTR=0 when counting down. At either of these limits, the counting is resumed only when the count direction is reversed.

2IQEC2/43798 Manual

B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350

PH (815) 433-5100 -- FAX (815) 433-5105

2IQEC2, 2IQEC4 specifications

B&B Electronics has long been a key player in the field of industrial communication and networking solutions, and their 2IQEC4 and 2IQEC2 devices stand as reflective examples of their innovation and dedication to quality. These devices are part of the company's extensive range designed to facilitate communication in diverse industrial settings, ensuring reliability and efficiency.

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In summary, B&B Electronics' 2IQEC4 and 2IQEC2 models offer a reliable, efficient, and secure solution for industrial networking. With their robust construction, advanced features, and user-friendly management capabilities, these Ethernet switches are well-equipped to meet the challenges of modern industrial environments, making them invaluable assets in enhancing communication and operational efficiency.

B&B Electronics 2IQEC2 Counter Mode Registers Write to Control Address, Filter Clock Prescalers

Models: 2IQEC2 2IQEC4